diff --git a/common/constants.h b/common/constants.h
index f1d044e..1106a77 100644
--- a/common/constants.h
+++ b/common/constants.h
@@ -9,7 +9,7 @@ namespace common::constants
 
 const int MAX_JUST_PRESSED_KEYS = TOTAL_NUM_KEYS;
 
-const int MAX_QUEUED_KEY_EVENTS = 20;
+const int MAX_QUEUED_KEY_EVENTS = 100;
 
 const int MAX_KEYREPORT_KEYS = 6;
 
diff --git a/common/custom_keycodes.h b/common/custom_keycodes.h
index 4b6d87d..7879a7c 100644
--- a/common/custom_keycodes.h
+++ b/common/custom_keycodes.h
@@ -7,13 +7,30 @@ namespace common::constants
 
 const uint16_t LAYER_HOLD_MODIFIER = 0xC000;
 const uint16_t LAYER_TOGGLE_MODIFIER = 0xB000;
+const uint16_t MOUSE_BASE_CODE = 0xA000;
+const uint16_t CONTROL_BASE_CODE = 0xD000;
 
-const uint16_t LAYER_HOLD_0 = (0 | LAYER_HOLD_MODIFIER);
 const uint16_t LAYER_HOLD_1 = (1 | LAYER_HOLD_MODIFIER);
 const uint16_t LAYER_HOLD_2 = (2 | LAYER_HOLD_MODIFIER);
 
-const uint16_t LAYER_TOGGLE_0 = (0 | LAYER_TOGGLE_MODIFIER);
 const uint16_t LAYER_TOGGLE_1 = (1 | LAYER_TOGGLE_MODIFIER);
 const uint16_t LAYER_TOGGLE_2 = (2 | LAYER_TOGGLE_MODIFIER);
 
+const uint16_t MOUSE_LEFT_CLICK =       (0 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_RIGHT_CLICK =      (1 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_MIDDLE_CLICK =     (2 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_SCROLL_UP =        (3 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_SCROLL_DOWN =      (4 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_MOVE_LEFT =        (5 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_MOVE_RIGHT =       (6 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_MOVE_UP =          (7 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_MOVE_DOWN =        (8 | MOUSE_BASE_CODE);
+const uint16_t MOUSE_MOVE_ACCELERATE =  (9 | MOUSE_BASE_CODE);
+const uint16_t MAX_MOUSE_CODE = 9;
+
+const uint16_t CONTROL_BRIGHTNESS_INC =     (0 | CONTROL_BASE_CODE);
+const uint16_t CONTROL_BRIGHTNESS_DEC =     (1 | CONTROL_BASE_CODE);
+const uint16_t CONTROL_CONFIG_MODE_TOGGLE = (2 | CONTROL_BASE_CODE);
+const uint16_t MAX_CONTROL_CODE = 2;
+
 }
diff --git a/compile_commands.json b/compile_commands.json
index b1adc35..44fea57 100644
--- a/compile_commands.json
+++ b/compile_commands.json
@@ -16,23 +16,6 @@
     "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/firmware.cpp",
     "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/test/core/firmware.o"
   },
-  {
-    "arguments": [
-      "/usr/bin/g++",
-      "-c",
-      "-g",
-      "-Wall",
-      "-Wextra",
-      "-std=gnu++23",
-      "-Isubmodules/Catch2/extras",
-      "-o",
-      "build/test/core/backlight/schemes/gameoflife.o",
-      "core/backlight/schemes/gameoflife.cpp"
-    ],
-    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/schemes/gameoflife.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/test/core/backlight/schemes/gameoflife.o"
-  },
   {
     "arguments": [
       "/usr/bin/g++",
@@ -152,6 +135,23 @@
     "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/keyscan.cpp",
     "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/test/core/keyboard/keyscan.o"
   },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-Isubmodules/Catch2/extras",
+      "-o",
+      "build/test/core/util/buffer_utils.o",
+      "core/util/buffer_utils.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/util/buffer_utils.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/test/core/util/buffer_utils.o"
+  },
   {
     "arguments": [
       "/usr/bin/g++",
@@ -288,44 +288,6 @@
     "file": "/home/malcolm/Programming/ZeKeyboard/firmware/submodules/Catch2/extras/catch_amalgamated.cpp",
     "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/test/submodules/Catch2/extras/catch_amalgamated.o"
   },
-  {
-    "arguments": [
-      "/home/malcolm/.arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/arm-none-eabi-g++",
-      "-c",
-      "-x",
-      "c++-header",
-      "-O2",
-      "-g",
-      "-Wall",
-      "-ffunction-sections",
-      "-fdata-sections",
-      "-std=gnu++17",
-      "-fno-exceptions",
-      "-fpermissive",
-      "-fno-rtti",
-      "-fno-threadsafe-statics",
-      "-felide-constructors",
-      "-Wno-error=narrowing",
-      "-mthumb",
-      "-mcpu=cortex-m7",
-      "-mfloat-abi=hard",
-      "-mfpu=fpv5-d16",
-      "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
-      "-DARDUINO=10607",
-      "-DARDUINO_TEENSY41",
-      "-DF_CPU=600000000",
-      "-DUSB_SERIAL_HID",
-      "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-o",
-      "build/pch/Arduino.h.gch",
-      "build/pch/Arduino.h"
-    ],
-    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/build/pch/Arduino.h",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/pch/Arduino.h.gch"
-  },
   {
     "arguments": [
       "/home/malcolm/.arduino15/packages/teensy/tools/teensy-compile/11.3.1/arm/bin/arm-none-eabi-g++",
@@ -347,7 +309,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -355,12 +317,12 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
       "build/teensy_device.o",
@@ -391,7 +353,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -399,12 +361,12 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
       "build/teensy_firmware.o",
@@ -435,7 +397,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -443,12 +405,12 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
       "build/core/firmware.o",
@@ -479,7 +441,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -487,20 +449,20 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core/backlight/schemes/gameoflife.o",
-      "core/backlight/schemes/gameoflife.cpp"
+      "build/core/backlight/schemes/wave.o",
+      "core/backlight/schemes/wave.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/schemes/gameoflife.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/backlight/schemes/gameoflife.o"
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/schemes/wave.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/backlight/schemes/wave.o"
   },
   {
     "arguments": [
@@ -523,7 +485,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -531,20 +493,20 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core/backlight/schemes/wave.o",
-      "core/backlight/schemes/wave.cpp"
+      "build/core/backlight/backlight.o",
+      "core/backlight/backlight.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/schemes/wave.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/backlight/schemes/wave.o"
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/backlight.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/backlight/backlight.o"
   },
   {
     "arguments": [
@@ -567,7 +529,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -575,20 +537,20 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core/backlight/backlight.o",
-      "core/backlight/backlight.cpp"
+      "build/core/backlight/ledstate.o",
+      "core/backlight/ledstate.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/backlight.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/backlight/backlight.o"
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/ledstate.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/backlight/ledstate.o"
   },
   {
     "arguments": [
@@ -611,7 +573,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -619,20 +581,20 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core/backlight/ledstate.o",
-      "core/backlight/ledstate.cpp"
+      "build/core/keyboard/action.o",
+      "core/keyboard/action.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/ledstate.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/backlight/ledstate.o"
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/action.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/keyboard/action.o"
   },
   {
     "arguments": [
@@ -655,7 +617,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -663,20 +625,20 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core/keyboard/action.o",
-      "core/keyboard/action.cpp"
+      "build/core/keyboard/communication.o",
+      "core/keyboard/communication.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/action.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/keyboard/action.o"
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/communication.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/keyboard/communication.o"
   },
   {
     "arguments": [
@@ -699,7 +661,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -707,20 +669,20 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core/keyboard/communication.o",
-      "core/keyboard/communication.cpp"
+      "build/core/keyboard/keymap.o",
+      "core/keyboard/keymap.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/communication.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/keyboard/communication.o"
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/keymap.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/keyboard/keymap.o"
   },
   {
     "arguments": [
@@ -743,7 +705,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -751,20 +713,20 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core/keyboard/keymap.o",
-      "core/keyboard/keymap.cpp"
+      "build/core/keyboard/keyscan.o",
+      "core/keyboard/keyscan.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/keymap.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/keyboard/keymap.o"
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/keyscan.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/keyboard/keyscan.o"
   },
   {
     "arguments": [
@@ -787,7 +749,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -795,20 +757,20 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core/keyboard/keyscan.o",
-      "core/keyboard/keyscan.cpp"
+      "build/core/util/buffer_utils.o",
+      "core/util/buffer_utils.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/keyscan.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/keyboard/keyscan.o"
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/util/buffer_utils.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/util/buffer_utils.o"
   },
   {
     "arguments": [
@@ -831,7 +793,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -839,12 +801,12 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
       "build/core/util/timer.o",
@@ -875,7 +837,7 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
@@ -883,12 +845,12 @@
       "-DLAYOUT_US_ENGLISH",
       "-std=gnu++23",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
       "build/common/key_properties.o",
@@ -919,28 +881,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/bitswap.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/bitswap.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/bitswap.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/bitswap.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/bitswap.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/bitswap.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/bitswap.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/bitswap.o"
   },
   {
     "arguments": [
@@ -963,28 +925,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/colorpalettes.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/colorpalettes.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/colorpalettes.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/colorpalettes.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/colorpalettes.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/colorpalettes.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/colorpalettes.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/colorpalettes.o"
   },
   {
     "arguments": [
@@ -1007,28 +969,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/colorutils.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/colorutils.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/colorutils.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/colorutils.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/colorutils.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/colorutils.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/colorutils.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/colorutils.o"
   },
   {
     "arguments": [
@@ -1051,28 +1013,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/FastLED.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/FastLED.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/FastLED.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/FastLED.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/FastLED.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/FastLED.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/FastLED.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/FastLED.o"
   },
   {
     "arguments": [
@@ -1095,28 +1057,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/hsv2rgb.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/hsv2rgb.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/hsv2rgb.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/hsv2rgb.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/hsv2rgb.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/hsv2rgb.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/hsv2rgb.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/hsv2rgb.o"
   },
   {
     "arguments": [
@@ -1139,28 +1101,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/lib8tion.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/lib8tion.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/lib8tion.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/lib8tion.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/lib8tion.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/lib8tion.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/lib8tion.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/lib8tion.o"
   },
   {
     "arguments": [
@@ -1183,28 +1145,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/noise.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/noise.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/noise.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/noise.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/noise.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/noise.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/noise.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/noise.o"
   },
   {
     "arguments": [
@@ -1227,28 +1189,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/platforms.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/platforms.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/platforms.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/platforms.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/platforms.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/platforms.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/platforms.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/platforms.o"
   },
   {
     "arguments": [
@@ -1271,28 +1233,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/power_mgt.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/power_mgt.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/power_mgt.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/power_mgt.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/power_mgt.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/power_mgt.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/power_mgt.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/power_mgt.o"
   },
   {
     "arguments": [
@@ -1315,28 +1277,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/wiring.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/wiring.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/wiring.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/wiring.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/wiring.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src/wiring.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/wiring.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src/wiring.o"
   },
   {
     "arguments": [
@@ -1359,28 +1321,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI/SPI.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI/SPI.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI/SPI.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI/SPI.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI/SPI.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI/SPI.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI/SPI.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI/SPI.o"
   },
   {
     "arguments": [
@@ -1403,28 +1365,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811/OctoWS2811.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811/OctoWS2811.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811/OctoWS2811.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811/OctoWS2811.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811/OctoWS2811.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811/OctoWS2811.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811/OctoWS2811.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811/OctoWS2811.o"
   },
   {
     "arguments": [
@@ -1447,28 +1409,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811/OctoWS2811_imxrt.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811/OctoWS2811_imxrt.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811/OctoWS2811_imxrt.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811/OctoWS2811_imxrt.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811/OctoWS2811_imxrt.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811/OctoWS2811_imxrt.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811/OctoWS2811_imxrt.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811/OctoWS2811_imxrt.o"
   },
   {
     "arguments": [
@@ -1491,28 +1453,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src/SD.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src/SD.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src/SD.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src/SD.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src/SD.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src/SD.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src/SD.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src/SD.o"
   },
   {
     "arguments": [
@@ -1535,28 +1497,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FreeStack.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FreeStack.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FreeStack.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FreeStack.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FreeStack.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FreeStack.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FreeStack.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FreeStack.o"
   },
   {
     "arguments": [
@@ -1579,28 +1541,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/MinimumSerial.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/MinimumSerial.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/MinimumSerial.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/MinimumSerial.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/MinimumSerial.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/MinimumSerial.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/MinimumSerial.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/MinimumSerial.o"
   },
   {
     "arguments": [
@@ -1623,28 +1585,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FmtNumber.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FmtNumber.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FmtNumber.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FmtNumber.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FmtNumber.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FmtNumber.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FmtNumber.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FmtNumber.o"
   },
   {
     "arguments": [
@@ -1667,28 +1629,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsCache.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsCache.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsCache.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsCache.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsCache.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsCache.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsCache.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsCache.o"
   },
   {
     "arguments": [
@@ -1711,28 +1673,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsDateTime.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsDateTime.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsDateTime.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsDateTime.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsDateTime.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsDateTime.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsDateTime.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsDateTime.o"
   },
   {
     "arguments": [
@@ -1755,28 +1717,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsName.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsName.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsName.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsName.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsName.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsName.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsName.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsName.o"
   },
   {
     "arguments": [
@@ -1799,28 +1761,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsStructs.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsStructs.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsStructs.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsStructs.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsStructs.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsStructs.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsStructs.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsStructs.o"
   },
   {
     "arguments": [
@@ -1843,28 +1805,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsUtf.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsUtf.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsUtf.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsUtf.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsUtf.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/FsUtf.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsUtf.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/FsUtf.o"
   },
   {
     "arguments": [
@@ -1887,28 +1849,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/PrintBasic.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/PrintBasic.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/PrintBasic.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/PrintBasic.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/PrintBasic.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/PrintBasic.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/PrintBasic.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/PrintBasic.o"
   },
   {
     "arguments": [
@@ -1931,28 +1893,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/upcase.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/upcase.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/upcase.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/upcase.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/upcase.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/common/upcase.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/upcase.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/common/upcase.o"
   },
   {
     "arguments": [
@@ -1975,28 +1937,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatDbg.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatDbg.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatDbg.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatDbg.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatDbg.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatDbg.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatDbg.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatDbg.o"
   },
   {
     "arguments": [
@@ -2019,28 +1981,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFile.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFile.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFile.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFile.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFile.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFile.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFile.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFile.o"
   },
   {
     "arguments": [
@@ -2063,28 +2025,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFilePrint.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFilePrint.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFilePrint.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFilePrint.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFilePrint.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFilePrint.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFilePrint.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFilePrint.o"
   },
   {
     "arguments": [
@@ -2107,28 +2069,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFileWrite.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFileWrite.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFileWrite.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFileWrite.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFileWrite.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFileWrite.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFileWrite.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFileWrite.o"
   },
   {
     "arguments": [
@@ -2151,28 +2113,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFormatter.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFormatter.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFormatter.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFormatter.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFormatter.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatFormatter.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFormatter.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatFormatter.o"
   },
   {
     "arguments": [
@@ -2195,28 +2157,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatName.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatName.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatName.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatName.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatName.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatName.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatName.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatName.o"
   },
   {
     "arguments": [
@@ -2239,28 +2201,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatPartition.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatPartition.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatPartition.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatPartition.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatPartition.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatPartition.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatPartition.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatPartition.o"
   },
   {
     "arguments": [
@@ -2283,28 +2245,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatVolume.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatVolume.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatVolume.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatVolume.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatVolume.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/ExFatVolume.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatVolume.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/ExFatVolume.o"
   },
   {
     "arguments": [
@@ -2327,28 +2289,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/upcase.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/upcase.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/upcase.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/upcase.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/upcase.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/ExFatLib/upcase.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/upcase.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/ExFatLib/upcase.o"
   },
   {
     "arguments": [
@@ -2371,28 +2333,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatDbg.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatDbg.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatDbg.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatDbg.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatDbg.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatDbg.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatDbg.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatDbg.o"
   },
   {
     "arguments": [
@@ -2415,28 +2377,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFile.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFile.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFile.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFile.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFile.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFile.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFile.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFile.o"
   },
   {
     "arguments": [
@@ -2459,28 +2421,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFileLFN.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFileLFN.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFileLFN.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFileLFN.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFileLFN.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFileLFN.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFileLFN.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFileLFN.o"
   },
   {
     "arguments": [
@@ -2503,28 +2465,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFilePrint.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFilePrint.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFilePrint.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFilePrint.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFilePrint.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFilePrint.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFilePrint.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFilePrint.o"
   },
   {
     "arguments": [
@@ -2547,28 +2509,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFileSFN.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFileSFN.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFileSFN.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFileSFN.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFileSFN.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFileSFN.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFileSFN.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFileSFN.o"
   },
   {
     "arguments": [
@@ -2591,28 +2553,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFormatter.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFormatter.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFormatter.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFormatter.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFormatter.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatFormatter.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFormatter.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatFormatter.o"
   },
   {
     "arguments": [
@@ -2635,28 +2597,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatName.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatName.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatName.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatName.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatName.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatName.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatName.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatName.o"
   },
   {
     "arguments": [
@@ -2679,28 +2641,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatPartition.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatPartition.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatPartition.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatPartition.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatPartition.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatPartition.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatPartition.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatPartition.o"
   },
   {
     "arguments": [
@@ -2723,28 +2685,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatVolume.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatVolume.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatVolume.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatVolume.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatVolume.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FatLib/FatVolume.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatVolume.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FatLib/FatVolume.o"
   },
   {
     "arguments": [
@@ -2767,28 +2729,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsFile.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsFile.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsFile.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsFile.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsFile.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsFile.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsFile.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsFile.o"
   },
   {
     "arguments": [
@@ -2811,28 +2773,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsNew.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsNew.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsNew.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsNew.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsNew.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsNew.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsNew.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsNew.o"
   },
   {
     "arguments": [
@@ -2855,28 +2817,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsVolume.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsVolume.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsVolume.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsVolume.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsVolume.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/FsLib/FsVolume.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsVolume.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/FsLib/FsVolume.o"
   },
   {
     "arguments": [
@@ -2899,28 +2861,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdCardInfo.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdCardInfo.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdCardInfo.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdCardInfo.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdCardInfo.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdCardInfo.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdCardInfo.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdCardInfo.o"
   },
   {
     "arguments": [
@@ -2943,28 +2905,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdioTeensy.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdioTeensy.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdioTeensy.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdioTeensy.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdioTeensy.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdioTeensy.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdioTeensy.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdioTeensy.o"
   },
   {
     "arguments": [
@@ -2987,28 +2949,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdSpiCard.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdSpiCard.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdSpiCard.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdSpiCard.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdSpiCard.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SdCard/SdSpiCard.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdSpiCard.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SdCard/SdSpiCard.o"
   },
   {
     "arguments": [
@@ -3031,28 +2993,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/istream.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/istream.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/istream.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/istream.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/istream.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/istream.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/istream.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/istream.o"
   },
   {
     "arguments": [
@@ -3075,28 +3037,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/ostream.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/ostream.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/ostream.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/ostream.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/ostream.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/ostream.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/ostream.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/ostream.o"
   },
   {
     "arguments": [
@@ -3119,28 +3081,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/StdioStream.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/StdioStream.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/StdioStream.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/StdioStream.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/StdioStream.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/StdioStream.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/StdioStream.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/StdioStream.o"
   },
   {
     "arguments": [
@@ -3163,28 +3125,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/StreamBaseClass.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/StreamBaseClass.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/StreamBaseClass.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/StreamBaseClass.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/StreamBaseClass.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/iostream/StreamBaseClass.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/StreamBaseClass.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/iostream/StreamBaseClass.o"
   },
   {
     "arguments": [
@@ -3207,28 +3169,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiArtemis.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiArtemis.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiArtemis.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiArtemis.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiArtemis.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiArtemis.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiArtemis.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiArtemis.o"
   },
   {
     "arguments": [
@@ -3251,28 +3213,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiChipSelect.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiChipSelect.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiChipSelect.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiChipSelect.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiChipSelect.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiChipSelect.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiChipSelect.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiChipSelect.o"
   },
   {
     "arguments": [
@@ -3295,28 +3257,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiDue.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiDue.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiDue.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiDue.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiDue.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiDue.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiDue.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiDue.o"
   },
   {
     "arguments": [
@@ -3339,28 +3301,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiESP.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiESP.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiESP.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiESP.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiESP.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiESP.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiESP.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiESP.o"
   },
   {
     "arguments": [
@@ -3383,28 +3345,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiParticle.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiParticle.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiParticle.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiParticle.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiParticle.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiParticle.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiParticle.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiParticle.o"
   },
   {
     "arguments": [
@@ -3427,28 +3389,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiSTM32Core.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiSTM32Core.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiSTM32Core.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiSTM32Core.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiSTM32Core.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiSTM32Core.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiSTM32Core.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiSTM32Core.o"
   },
   {
     "arguments": [
@@ -3471,28 +3433,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiSTM32.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiSTM32.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiSTM32.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiSTM32.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiSTM32.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiSTM32.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiSTM32.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiSTM32.o"
   },
   {
     "arguments": [
@@ -3515,28 +3477,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiTeensy3.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiTeensy3.cpp"
+      "build/libraries//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiTeensy3.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiTeensy3.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiTeensy3.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src/SpiDriver/SdSpiTeensy3.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiTeensy3.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/libraries/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src/SpiDriver/SdSpiTeensy3.o"
   },
   {
     "arguments": [
@@ -3559,28 +3521,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/AudioStream.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/AudioStream.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/AudioStream.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/AudioStream.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/AudioStream.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/AudioStream.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/AudioStream.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/AudioStream.cpp.o"
   },
   {
     "arguments": [
@@ -3603,28 +3565,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/CrashReport.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/CrashReport.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/CrashReport.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/CrashReport.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/CrashReport.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/CrashReport.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/CrashReport.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/CrashReport.cpp.o"
   },
   {
     "arguments": [
@@ -3647,28 +3609,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/DMAChannel.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/DMAChannel.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/DMAChannel.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/DMAChannel.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/DMAChannel.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/DMAChannel.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/DMAChannel.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/DMAChannel.cpp.o"
   },
   {
     "arguments": [
@@ -3691,28 +3653,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/EventResponder.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/EventResponder.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/EventResponder.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/EventResponder.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/EventResponder.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/EventResponder.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/EventResponder.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/EventResponder.cpp.o"
   },
   {
     "arguments": [
@@ -3735,28 +3697,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial1.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial1.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial1.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial1.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial1.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial1.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial1.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial1.cpp.o"
   },
   {
     "arguments": [
@@ -3779,28 +3741,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial2.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial2.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial2.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial2.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial2.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial2.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial2.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial2.cpp.o"
   },
   {
     "arguments": [
@@ -3823,28 +3785,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial3.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial3.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial3.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial3.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial3.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial3.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial3.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial3.cpp.o"
   },
   {
     "arguments": [
@@ -3867,28 +3829,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial4.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial4.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial4.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial4.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial4.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial4.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial4.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial4.cpp.o"
   },
   {
     "arguments": [
@@ -3911,28 +3873,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial5.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial5.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial5.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial5.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial5.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial5.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial5.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial5.cpp.o"
   },
   {
     "arguments": [
@@ -3955,28 +3917,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial6.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial6.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial6.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial6.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial6.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial6.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial6.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial6.cpp.o"
   },
   {
     "arguments": [
@@ -3999,28 +3961,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial7.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial7.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial7.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial7.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial7.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial7.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial7.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial7.cpp.o"
   },
   {
     "arguments": [
@@ -4043,28 +4005,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial8.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial8.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial8.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial8.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial8.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial8.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial8.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial8.cpp.o"
   },
   {
     "arguments": [
@@ -4087,28 +4049,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/HardwareSerial.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/HardwareSerial.cpp.o"
   },
   {
     "arguments": [
@@ -4131,28 +4093,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/IntervalTimer.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/IntervalTimer.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/IntervalTimer.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/IntervalTimer.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/IntervalTimer.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/IntervalTimer.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/IntervalTimer.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/IntervalTimer.cpp.o"
   },
   {
     "arguments": [
@@ -4175,28 +4137,28 @@
       "-mfloat-abi=hard",
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       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/IPAddress.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/IPAddress.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/IPAddress.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/IPAddress.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/IPAddress.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/IPAddress.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/IPAddress.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/IPAddress.cpp.o"
   },
   {
     "arguments": [
@@ -4219,28 +4181,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/main.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/main.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/main.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/main.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/main.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/main.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/main.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/main.cpp.o"
   },
   {
     "arguments": [
@@ -4263,28 +4225,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/new.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/new.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/new.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/new.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/new.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/new.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/new.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/new.cpp.o"
   },
   {
     "arguments": [
@@ -4307,28 +4269,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Print.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Print.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Print.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Print.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Print.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Print.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Print.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Print.cpp.o"
   },
   {
     "arguments": [
@@ -4351,28 +4313,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent1.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent1.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent1.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent1.cpp"
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     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent1.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent1.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent1.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent1.cpp.o"
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@@ -4395,28 +4357,28 @@
       "-mfloat-abi=hard",
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       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent2.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent2.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent2.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent2.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent2.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent2.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent2.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent2.cpp.o"
   },
   {
     "arguments": [
@@ -4439,28 +4401,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent3.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent3.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent3.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent3.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent3.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent3.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent3.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent3.cpp.o"
   },
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     "arguments": [
@@ -4483,28 +4445,28 @@
       "-mfloat-abi=hard",
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       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent4.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent4.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent4.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent4.cpp"
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     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent4.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent4.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent4.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent4.cpp.o"
   },
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     "arguments": [
@@ -4527,28 +4489,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent5.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent5.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent5.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent5.cpp"
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     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent5.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent5.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent5.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent5.cpp.o"
   },
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     "arguments": [
@@ -4571,28 +4533,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent6.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent6.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent6.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent6.cpp"
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-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent6.cpp",
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+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent6.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent6.cpp.o"
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@@ -4615,28 +4577,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent7.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent7.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent7.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent7.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent7.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent7.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent7.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent7.cpp.o"
   },
   {
     "arguments": [
@@ -4659,28 +4621,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent8.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent8.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent8.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent8.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent8.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent8.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent8.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent8.cpp.o"
   },
   {
     "arguments": [
@@ -4703,28 +4665,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEvent.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEvent.cpp.o"
   },
   {
     "arguments": [
@@ -4747,28 +4709,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEventUSB1.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEventUSB1.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEventUSB1.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEventUSB1.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEventUSB1.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEventUSB1.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEventUSB1.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEventUSB1.cpp.o"
   },
   {
     "arguments": [
@@ -4791,28 +4753,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEventUSB2.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEventUSB2.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEventUSB2.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEventUSB2.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEventUSB2.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/serialEventUSB2.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEventUSB2.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/serialEventUSB2.cpp.o"
   },
   {
     "arguments": [
@@ -4835,28 +4797,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Stream.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Stream.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Stream.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Stream.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Stream.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Stream.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Stream.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Stream.cpp.o"
   },
   {
     "arguments": [
@@ -4879,28 +4841,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Time.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Time.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Time.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Time.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Time.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Time.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Time.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Time.cpp.o"
   },
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     "arguments": [
@@ -4923,28 +4885,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Tone.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Tone.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Tone.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Tone.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Tone.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/Tone.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Tone.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/Tone.cpp.o"
   },
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@@ -4967,28 +4929,28 @@
       "-mfloat-abi=hard",
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+      "-DTEENSYDUINO=159",
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       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_audio.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_audio.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_audio.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_audio.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_audio.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_audio.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_audio.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_audio.cpp.o"
   },
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@@ -5011,28 +4973,28 @@
       "-mfloat-abi=hard",
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       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_flightsim.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_flightsim.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_flightsim.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_flightsim.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_flightsim.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_flightsim.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_flightsim.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_flightsim.cpp.o"
   },
   {
     "arguments": [
@@ -5055,28 +5017,28 @@
       "-mfloat-abi=hard",
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       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/OctoWS2811",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_inst.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_inst.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_inst.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_inst.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_inst.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_inst.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_inst.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_inst.cpp.o"
   },
   {
     "arguments": [
@@ -5099,28 +5061,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/WMath.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/WMath.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/WMath.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/WMath.cpp"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/WMath.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/WMath.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/WMath.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/WMath.cpp.o"
   },
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     "arguments": [
@@ -5143,28 +5105,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
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       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/WString.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/WString.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/WString.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/WString.cpp"
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     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/WString.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/WString.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/WString.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/WString.cpp.o"
   },
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@@ -5187,28 +5149,28 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
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       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-std=gnu++14",
+      "-std=gnu++17",
       "-Ibuild/pch",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/FastLED/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SPI",
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-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SD/src",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/libraries/SdFat/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/FastLED/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SPI",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/OctoWS2811",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SD/src",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/libraries/SdFat/src",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/yield.cpp.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/yield.cpp"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/yield.cpp.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/yield.cpp"
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-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/yield.cpp",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/yield.cpp.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/yield.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/yield.cpp.o"
   },
   {
     "arguments": [
@@ -5224,21 +5186,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/analog.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/analog.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/analog.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/analog.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/analog.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/analog.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/analog.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/analog.c.o"
   },
   {
     "arguments": [
@@ -5254,21 +5216,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/bootdata.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/bootdata.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/bootdata.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/bootdata.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/bootdata.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/bootdata.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/bootdata.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/bootdata.c.o"
   },
   {
     "arguments": [
@@ -5284,21 +5246,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/clockspeed.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/clockspeed.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/clockspeed.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/clockspeed.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/clockspeed.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/clockspeed.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/clockspeed.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/clockspeed.c.o"
   },
   {
     "arguments": [
@@ -5314,21 +5276,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/debugprintf.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/debugprintf.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/debugprintf.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/debugprintf.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/debugprintf.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/debugprintf.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/debugprintf.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/debugprintf.c.o"
   },
   {
     "arguments": [
@@ -5344,21 +5306,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/delay.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/delay.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/delay.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/delay.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/delay.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/delay.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/delay.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/delay.c.o"
   },
   {
     "arguments": [
@@ -5374,21 +5336,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/digital.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/digital.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/digital.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/digital.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/digital.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/digital.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/digital.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/digital.c.o"
   },
   {
     "arguments": [
@@ -5404,21 +5366,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/eeprom.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/eeprom.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/eeprom.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/eeprom.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/eeprom.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/eeprom.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/eeprom.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/eeprom.c.o"
   },
   {
     "arguments": [
@@ -5434,21 +5396,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/extmem.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/extmem.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/extmem.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/extmem.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/extmem.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/extmem.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/extmem.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/extmem.c.o"
   },
   {
     "arguments": [
@@ -5464,21 +5426,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/fuse.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/fuse.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/fuse.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/fuse.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/fuse.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/fuse.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/fuse.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/fuse.c.o"
   },
   {
     "arguments": [
@@ -5494,21 +5456,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/interrupt.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/interrupt.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/interrupt.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/interrupt.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/interrupt.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/interrupt.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/interrupt.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/interrupt.c.o"
   },
   {
     "arguments": [
@@ -5524,21 +5486,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/keylayouts.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/keylayouts.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/keylayouts.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/keylayouts.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/keylayouts.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/keylayouts.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/keylayouts.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/keylayouts.c.o"
   },
   {
     "arguments": [
@@ -5554,21 +5516,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/libc.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/libc.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/libc.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/libc.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/libc.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/libc.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/libc.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/libc.c.o"
   },
   {
     "arguments": [
@@ -5584,21 +5546,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/nonstd.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/nonstd.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/nonstd.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/nonstd.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/nonstd.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/nonstd.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/nonstd.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/nonstd.c.o"
   },
   {
     "arguments": [
@@ -5614,21 +5576,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/pwm.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/pwm.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/pwm.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/pwm.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/pwm.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/pwm.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/pwm.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/pwm.c.o"
   },
   {
     "arguments": [
@@ -5644,21 +5606,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/rtc.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/rtc.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/rtc.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/rtc.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/rtc.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/rtc.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/rtc.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/rtc.c.o"
   },
   {
     "arguments": [
@@ -5674,21 +5636,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_alloc_valid.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_alloc_valid.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_alloc_valid.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_alloc_valid.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_alloc_valid.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_alloc_valid.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_alloc_valid.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_alloc_valid.c.o"
   },
   {
     "arguments": [
@@ -5704,21 +5666,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_calloc.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_calloc.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_calloc.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_calloc.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_calloc.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_calloc.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_calloc.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_calloc.c.o"
   },
   {
     "arguments": [
@@ -5734,21 +5696,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_free.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_free.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_free.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_free.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_free.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_free.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_free.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_free.c.o"
   },
   {
     "arguments": [
@@ -5764,21 +5726,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_hash.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_hash.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_hash.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_hash.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_hash.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_hash.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_hash.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_hash.c.o"
   },
   {
     "arguments": [
@@ -5794,21 +5756,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_malloc.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_malloc.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_malloc.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_malloc.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_malloc.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_malloc.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_malloc.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_malloc.c.o"
   },
   {
     "arguments": [
@@ -5824,21 +5786,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_malloc_stats.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_malloc_stats.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_malloc_stats.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_malloc_stats.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_malloc_stats.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_malloc_stats.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_malloc_stats.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_malloc_stats.c.o"
   },
   {
     "arguments": [
@@ -5854,21 +5816,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_pool.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_pool.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_pool.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_pool.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_pool.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_pool.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_pool.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_pool.c.o"
   },
   {
     "arguments": [
@@ -5884,21 +5846,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc.c.o"
   },
   {
     "arguments": [
@@ -5914,21 +5876,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc_i.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc_i.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc_i.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc_i.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc_i.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc_i.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc_i.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc_i.c.o"
   },
   {
     "arguments": [
@@ -5944,21 +5906,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc_move.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc_move.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc_move.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc_move.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc_move.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_realloc_move.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc_move.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_realloc_move.c.o"
   },
   {
     "arguments": [
@@ -5974,21 +5936,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_szalloc.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_szalloc.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_szalloc.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_szalloc.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_szalloc.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_szalloc.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_szalloc.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_szalloc.c.o"
   },
   {
     "arguments": [
@@ -6004,21 +5966,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_util.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_util.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_util.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_util.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_util.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_util.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_util.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_util.c.o"
   },
   {
     "arguments": [
@@ -6034,21 +5996,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_zalloc.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_zalloc.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_zalloc.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_zalloc.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_zalloc.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/sm_zalloc.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_zalloc.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/sm_zalloc.c.o"
   },
   {
     "arguments": [
@@ -6064,21 +6026,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/startup.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/startup.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/startup.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/startup.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/startup.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/startup.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/startup.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/startup.c.o"
   },
   {
     "arguments": [
@@ -6094,21 +6056,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/tempmon.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/tempmon.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/tempmon.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/tempmon.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/tempmon.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/tempmon.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/tempmon.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/tempmon.c.o"
   },
   {
     "arguments": [
@@ -6124,21 +6086,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb.c.o"
   },
   {
     "arguments": [
@@ -6154,21 +6116,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_desc.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_desc.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_desc.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_desc.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_desc.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_desc.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_desc.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_desc.c.o"
   },
   {
     "arguments": [
@@ -6184,21 +6146,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_joystick.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_joystick.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_joystick.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_joystick.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_joystick.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_joystick.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_joystick.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_joystick.c.o"
   },
   {
     "arguments": [
@@ -6214,21 +6176,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_keyboard.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_keyboard.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_keyboard.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_keyboard.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_keyboard.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_keyboard.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_keyboard.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_keyboard.c.o"
   },
   {
     "arguments": [
@@ -6244,21 +6206,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_midi.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_midi.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_midi.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_midi.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_midi.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_midi.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_midi.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_midi.c.o"
   },
   {
     "arguments": [
@@ -6274,21 +6236,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_mouse.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_mouse.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_mouse.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_mouse.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_mouse.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_mouse.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_mouse.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_mouse.c.o"
   },
   {
     "arguments": [
@@ -6304,21 +6266,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_mtp.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_mtp.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_mtp.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_mtp.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_mtp.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_mtp.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_mtp.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_mtp.c.o"
   },
   {
     "arguments": [
@@ -6334,21 +6296,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_rawhid.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_rawhid.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_rawhid.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_rawhid.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_rawhid.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_rawhid.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_rawhid.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_rawhid.c.o"
   },
   {
     "arguments": [
@@ -6364,21 +6326,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_seremu.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_seremu.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_seremu.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_seremu.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_seremu.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_seremu.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_seremu.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_seremu.c.o"
   },
   {
     "arguments": [
@@ -6394,21 +6356,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial2.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial2.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial2.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial2.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial2.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial2.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial2.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial2.c.o"
   },
   {
     "arguments": [
@@ -6424,21 +6386,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial3.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial3.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial3.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial3.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial3.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial3.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial3.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial3.c.o"
   },
   {
     "arguments": [
@@ -6454,21 +6416,21 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_serial.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_serial.c.o"
   },
   {
     "arguments": [
@@ -6484,21 +6446,38 @@
       "-mfloat-abi=hard",
       "-mfpu=fpv5-d16",
       "-D__IMXRT1062__",
-      "-DTEENSYDUINO=158",
+      "-DTEENSYDUINO=159",
       "-DARDUINO=10607",
       "-DARDUINO_TEENSY41",
       "-DF_CPU=600000000",
       "-DUSB_SERIAL_HID",
       "-DLAYOUT_US_ENGLISH",
-      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4",
+      "-I/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4",
       "-c",
       "-o",
-      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_touch.c.o",
-      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_touch.c"
+      "build/core//home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_touch.c.o",
+      "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_touch.c"
     ],
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware",
-    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_touch.c",
-    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.58.1/cores/teensy4/usb_touch.c.o"
+    "file": "/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_touch.c",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/build/core/home/malcolm/.arduino15/packages/teensy/hardware/avr/1.59.0/cores/teensy4/usb_touch.c.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/keyboard_state.o",
+      "keyboard_state.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/keyboard_state.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/obj/keyboard_state.o"
   },
   {
     "arguments": [
@@ -6516,5 +6495,226 @@
     "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
     "file": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/simulator.cpp",
     "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/obj/simulator.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/simulator_device.o",
+      "simulator_device.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/simulator_device.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/obj/simulator_device.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/simulator_window.o",
+      "simulator_window.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/simulator_window.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/obj/simulator_window.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/firmware.o",
+      "../core/firmware.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/firmware.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/firmware.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/backlight/backlight.o",
+      "../core/backlight/backlight.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/backlight.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/backlight/backlight.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/backlight/ledstate.o",
+      "../core/backlight/ledstate.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/ledstate.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/backlight/ledstate.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/keyboard/action.o",
+      "../core/keyboard/action.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/action.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/keyboard/action.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/keyboard/communication.o",
+      "../core/keyboard/communication.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/communication.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/keyboard/communication.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/keyboard/keymap.o",
+      "../core/keyboard/keymap.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/keymap.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/keyboard/keymap.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/keyboard/keyscan.o",
+      "../core/keyboard/keyscan.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/keyboard/keyscan.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/keyboard/keyscan.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/util/buffer_utils.o",
+      "../core/util/buffer_utils.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/util/buffer_utils.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/util/buffer_utils.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/util/timer.o",
+      "../core/util/timer.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/util/timer.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/util/timer.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../core/backlight/schemes/wave.o",
+      "../core/backlight/schemes/wave.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/core/backlight/schemes/wave.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/core/backlight/schemes/wave.o"
+  },
+  {
+    "arguments": [
+      "/usr/bin/g++",
+      "-c",
+      "-g",
+      "-Wall",
+      "-Wextra",
+      "-std=gnu++23",
+      "-I/usr/include/SFML",
+      "-o",
+      "obj/../common/key_properties.o",
+      "../common/key_properties.cpp"
+    ],
+    "directory": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator",
+    "file": "/home/malcolm/Programming/ZeKeyboard/firmware/common/key_properties.cpp",
+    "output": "/home/malcolm/Programming/ZeKeyboard/firmware/simulator/common/key_properties.o"
   }
 ]
diff --git a/core/backlight/schemes/wave.h b/core/backlight/schemes/wave.h
index f0d0dc1..149d88b 100644
--- a/core/backlight/schemes/wave.h
+++ b/core/backlight/schemes/wave.h
@@ -8,7 +8,7 @@
 namespace core::backlight::schemes
 {
 
-const float SPEED = 0.0005f;
+const float SPEED = 0.005f;
 const float X_SPEED = 0.8f;
 const float Y_SPEED = 1.1f;
 const float MAX_PHASE_DIFFERENCE = 0.3f;
diff --git a/core/firmware.cpp b/core/firmware.cpp
index 8555fe2..d352ebc 100644
--- a/core/firmware.cpp
+++ b/core/firmware.cpp
@@ -33,11 +33,10 @@ void Firmware::update()
         loaded_keymap = true;
     }
     device.start_timer();
-    keyboard::KeyboardScanResult result;
-    key_scanner.scan(result);
-    keymap.translate_keyboard_scan_result(result, key_queue);
+    key_scanner.scan(keyboard_scan_result);
+    keymap.translate_keyboard_scan_result(keyboard_scan_result, key_queue);
     keyboard::communication::send_key_report(key_queue, device);
-    backlight.update(result);
+    backlight.update(keyboard_scan_result);
 
     const uint32_t elapsed = device.get_timer_micros();
     if (elapsed < CYCLE_TIME_MICROS)
diff --git a/core/firmware.h b/core/firmware.h
index 79c449d..5135b91 100644
--- a/core/firmware.h
+++ b/core/firmware.h
@@ -24,6 +24,7 @@ class Firmware
     keyboard::KeyScanner key_scanner;
     keyboard::KeyQueue key_queue;
     keyboard::KeyMap keymap;
+    keyboard::KeyboardScanResult keyboard_scan_result;
 
     bool loaded_keymap = false;
 
diff --git a/core/keyboard/keymap.cpp b/core/keyboard/keymap.cpp
index 8d6c20a..2a412e4 100644
--- a/core/keyboard/keymap.cpp
+++ b/core/keyboard/keymap.cpp
@@ -144,6 +144,28 @@ void KeyMap::update_current_layer(const KeyboardScanResult& scan_result)
 }
 
 
+bool KeyMap::extract_single_key(const Action* action, KeyReport& single_key_report)
+{
+    if (action->is_single_key())
+    {
+        const auto code = action->sequence[0].key;
+        if (util::key_is_valid_standard_key(code))
+        {
+            // this check is necessary since the key might be a layer modifier
+            single_key_report.add_key(code);
+        }
+
+        const auto modifier = action->sequence[0].modifier;
+        single_key_report.add_key(modifier);
+
+        const auto media = action->sequence[0].media;
+        single_key_report.add_key(media);
+        return true;
+    }
+    return false;
+}
+
+
 void KeyMap::translate_keyboard_scan_result(const KeyboardScanResult& scan_result, KeyQueue& key_queue)
 {
     /*
@@ -170,40 +192,39 @@ void KeyMap::translate_keyboard_scan_result(const KeyboardScanResult& scan_resul
         const auto action = get_action(layer_to_use, key->row, key->col);
         if (action != nullptr)
         {
-            if (action->is_single_key())
-            {
-                const auto code = action->sequence[0].key;
-                if (util::key_is_valid_standard_key(code))
-                {
-                    // this check is necessary since the key might be a layer modifier
-                    single_key_report.add_key(code);
-                }
-
-                const auto modifier = action->sequence[0].modifier;
-                single_key_report.add_key(modifier);
-
-                const auto media = action->sequence[0].media;
-                single_key_report.add_key(media);
-                single_key_pressed = true;
-            }
-            else
+            single_key_pressed |= extract_single_key(action, single_key_report);
+        }
+    }
+
+
+    // handle sequences, these should start only once
+    for (int i = 0; i < scan_result.num_just_pressed; ++i)
+    {
+        const auto key = scan_result.just_pressed[i];
+        const auto action = get_action(layer_to_use, key->row, key->col);
+        if (action != nullptr && !action->is_single_key())
+        {
+            for (int j = 0; j < action->sequence_length; ++j)
             {
-                for (int j = 0; j < action->sequence_length; ++j)
-                {
-                    KeyReport report;
-                    const auto code = action->sequence[j].key;
-                    report.add_key(code);
-
-                    const auto modifier = action->sequence[j].modifier;
-                    report.add_key(modifier);
-
-                    const auto media = action->sequence[j].media;
-                    report.add_key(media);
-                    key_queue.push(report);
-                }
+                KeyReport report;
+                const auto code = action->sequence[j].key;
+                report.add_key(code);
+
+                const auto modifier = action->sequence[j].modifier;
+                report.add_key(modifier);
+
+                const auto media = action->sequence[j].media;
+                report.add_key(media);
+                key_queue.push(report);
+
+                // Add an empty report between each key, to ensure that the computer
+                // interprets them as separate keypresses. Otherwise double letters will
+                // be interpreted as a single letters.
+                key_queue.push({});
             }
         }
     }
+
     if (single_key_pressed && single_key_report.num_keys > 0)
     {
         key_queue.push(single_key_report);
@@ -258,9 +279,7 @@ bool KeyMap::deserialize_keymap(const uint16_t* data, int size)
         for (int j = 0; j < sequence_length; ++j)
         {
             const uint16_t key = data[i++];
-            if (!util::key_is_valid_standard_key(key)
-                && !util::key_is_layer_hold_modifier(key)
-                && !util::key_is_layer_toggle_modifier(key))
+            if (!util::key_is_valid_non_modifier_and_non_media(key))
             {
                 return false;
             }
diff --git a/core/keyboard/keymap.h b/core/keyboard/keymap.h
index 00850c6..a612e35 100644
--- a/core/keyboard/keymap.h
+++ b/core/keyboard/keymap.h
@@ -55,6 +55,12 @@ class KeyMap
      * Updates the current layer based on whether the scan result contains a toggle layer key.
      */
     void update_current_layer(const KeyboardScanResult& scan_result);
+
+    /**
+     * Extracts the key from the action and adds it to the key report.
+     * Returns true if the action is a single key press.
+     */
+    bool extract_single_key(const Action* action, KeyReport& single_key_report);
 };
 
 }
diff --git a/core/keyboard/keyutils.h b/core/keyboard/keyutils.h
index 70bc955..2c41764 100644
--- a/core/keyboard/keyutils.h
+++ b/core/keyboard/keyutils.h
@@ -8,7 +8,7 @@ namespace core::keyboard::util
 {
 
 /**
- * This array is used to check if a keycode is valid.
+ * This array is used to check if a standard keycode is valid.
  */
 const bool IS_KEYCODE_VALID[116]
 {
@@ -183,4 +183,24 @@ inline bool key_is_layer_toggle_modifier(uint16_t key)
     return get_layer_modifier_layer(key) < common::constants::MAX_NUM_LAYERS;
 }
 
+inline bool key_is_mouse_key(uint16_t key)
+{
+    return (key & 0xFF00) == common::constants::MOUSE_BASE_CODE;
+}
+
+inline bool key_is_control_key(uint16_t key)
+{
+    return (key & 0xFF00) == common::constants::CONTROL_BASE_CODE;
+}
+
+inline bool key_is_valid_non_modifier_and_non_media(uint16_t key)
+{
+    return
+        key_is_valid_standard_key(key) ||
+        key_is_layer_toggle_modifier(key) ||
+        key_is_layer_hold_modifier(key) ||
+        key_is_mouse_key(key) ||
+        key_is_control_key(key);
+}
+
 }
diff --git a/core/keyboard/test/test_keymap.cpp b/core/keyboard/test/test_keymap.cpp
index dbf0a1c..a7bc54f 100644
--- a/core/keyboard/test/test_keymap.cpp
+++ b/core/keyboard/test/test_keymap.cpp
@@ -473,6 +473,8 @@ TEST_CASE("Test translate scan result", "[KeyMap]")
         core::keyboard::KeyboardScanResult scan_result;
         scan_result.num_pressed = 1;
         scan_result.pressed[0] = &descriptions[1];
+        scan_result.num_just_pressed = 1;
+        scan_result.just_pressed[0] = &descriptions[1];
 
         keymap.translate_keyboard_scan_result(scan_result, queue);
 
diff --git a/core/util/array_utils.h b/core/util/array_utils.h
index ae10cf2..cdc5fb7 100644
--- a/core/util/array_utils.h
+++ b/core/util/array_utils.h
@@ -83,7 +83,6 @@ void array_subtract(const T a[], int a_size, const T b[], int b_size, T result[]
             result[result_size++] = a[i];
         }
     }
-
 }
 
 }
diff --git a/simulator/simulator_device.cpp b/simulator/simulator_device.cpp
index a118877..3e5c549 100644
--- a/simulator/simulator_device.cpp
+++ b/simulator/simulator_device.cpp
@@ -1,4 +1,5 @@
 #include "simulator_device.h"
+#include "keycodes.h"
 #include <chrono>
 #include <mutex>
 #include <thread>
@@ -54,7 +55,6 @@ void SimulatorDevice::gpio_setup(const uint8_t pin, const PinMode mode)
 void SimulatorDevice::gpio_write(const uint8_t pin, const PinState value)
 {
     std::lock_guard<std::mutex> lock(mutex);
-    std::cout << "SimulatorDevice::gpio_write(" << (int)pin << ", " << (int)value << ")" << std::endl;
     if (pin_to_row.count(pin))
     {
         row_state[pin_to_row[pin]] = (bool)value;
@@ -119,7 +119,23 @@ void SimulatorDevice::set_keyboard_media(const uint16_t media)
     this->current_media = media;
 }
 
-void SimulatorDevice::keyboard_send() { }
+void SimulatorDevice::keyboard_send()
+{
+    bool any_keys_pressed = false;
+    for (int i = 0; i < 6; i++)
+    {
+        if (current_keys[i] != 0)
+        {
+            any_keys_pressed = true;
+            const auto full_code = 0xF000 | current_keys[i];
+            std::cout << "Key: " << KEY_CODES.at(full_code);
+        }
+    }
+    if (any_keys_pressed)
+    {
+        std::cout << std::endl;
+    }
+}
 
 
 bool SimulatorDevice::sd_init()