diff --git a/.gitattributes b/.gitattributes
index a3666fc6..b2422412 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,7 +1,12 @@
 * text=auto
 
+# source files
 *.txt text
 *.cpp text
 *.h text
 CMakeLists.txt text
 *.cmake text
+*.json text
+
+# distribution archives
+/.github export-ignore
diff --git a/README.md b/README.md
index 5b34d16a..ee4ac00e 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,6 @@ Original author: Alister Thomson (alister_j_t at yahoo dot com)
 
 ## Homepage
 
-http://www.alister.eu/jazz/oj/
+http://alister.eu/jazz/oj/
 
 [logo]: res/unix/OpenJazz.png
diff --git a/res/unix/OpenJazz.6.adoc b/res/unix/OpenJazz.6.adoc
index 738b6e96..763a1d04 100644
--- a/res/unix/OpenJazz.6.adoc
+++ b/res/unix/OpenJazz.6.adoc
@@ -121,7 +121,7 @@ link:https://github.com/AlisterT/OpenJazz/issues[issue tracker].
 *J1E* - level editor by Newspaz,
 *JJ1MOD* - graphic editor by Doubble Dutch
 
-link:http://www.alister.eu/jazz/oj/[The OpenJazz Homepage]
+link:http://alister.eu/jazz/oj/[The OpenJazz Homepage]
 
 == Authors
 
diff --git a/res/wii/READMII.txt b/res/wii/READMII.txt
index 34e85d43..e57ef92c 100644
--- a/res/wii/READMII.txt
+++ b/res/wii/READMII.txt
@@ -1,6 +1,6 @@
 OpenJazz for Wii
 
-Licensed under GPLv2. See included gpl.txt for details.
+Licensed under GPLv2. See included licenses.txt for details.
 
 OpenJazz written by Alister Thomson http://alister.eu/jazz/oj/
 Originally ported to the Wii by tehpola.
diff --git a/src/io/log.cpp b/src/io/log.cpp
index e00af2ac..58cdfa83 100644
--- a/src/io/log.cpp
+++ b/src/io/log.cpp
@@ -7,7 +7,7 @@
  *
  * @par Licence:
  * Copyright (c) 2005-2017 Alister Thomson
- * Copyright (c) 2015-2022 Carsten Teibes
+ * Copyright (c) 2015-2023 Carsten Teibes
  *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
diff --git a/src/io/log.h b/src/io/log.h
index f5075557..030b1a29 100644
--- a/src/io/log.h
+++ b/src/io/log.h
@@ -7,7 +7,7 @@
  *
  * @par Licence:
  * Copyright (c) 2005-2017 Alister Thomson
- * Copyright (c) 2015-2022 Carsten Teibes
+ * Copyright (c) 2015-2023 Carsten Teibes
  *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
diff --git a/src/logo.h b/src/logo.h
index 24b144eb..14163250 100644
--- a/src/logo.h
+++ b/src/logo.h
@@ -7,6 +7,7 @@
  *
  * @par Licence:
  * Copyright (c) 2005-2017 Alister Thomson
+ * Copyright (c) 2015-2023 Carsten Teibes
  *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
diff --git a/src/platforms/3ds.cpp b/src/platforms/3ds.cpp
index 4beb2d34..726cbdd1 100644
--- a/src/platforms/3ds.cpp
+++ b/src/platforms/3ds.cpp
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/3ds.h b/src/platforms/3ds.h
index c5a90742..b6f56ab0 100644
--- a/src/platforms/3ds.h
+++ b/src/platforms/3ds.h
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/haiku.cpp b/src/platforms/haiku.cpp
index 1d59e6d8..c195af9b 100644
--- a/src/platforms/haiku.cpp
+++ b/src/platforms/haiku.cpp
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/haiku.h b/src/platforms/haiku.h
index 585a1243..404dafa5 100644
--- a/src/platforms/haiku.h
+++ b/src/platforms/haiku.h
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/platforms.h b/src/platforms/platforms.h
index 84c36182..cda4aa17 100644
--- a/src/platforms/platforms.h
+++ b/src/platforms/platforms.h
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/psp.cpp b/src/platforms/psp.cpp
index 3d2162cf..7e02cfcb 100644
--- a/src/platforms/psp.cpp
+++ b/src/platforms/psp.cpp
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/psp.h b/src/platforms/psp.h
index 809347eb..73506f6a 100644
--- a/src/platforms/psp.h
+++ b/src/platforms/psp.h
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/psvita.cpp b/src/platforms/psvita.cpp
index a5155935..2ae571de 100644
--- a/src/platforms/psvita.cpp
+++ b/src/platforms/psvita.cpp
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/psvita.h b/src/platforms/psvita.h
index 8624ffb2..d764f7ec 100644
--- a/src/platforms/psvita.h
+++ b/src/platforms/psvita.h
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/riscos.cpp b/src/platforms/riscos.cpp
index 2a6303aa..aa6b22e7 100644
--- a/src/platforms/riscos.cpp
+++ b/src/platforms/riscos.cpp
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/riscos.h b/src/platforms/riscos.h
index 69c5f9c4..7b0039d3 100644
--- a/src/platforms/riscos.h
+++ b/src/platforms/riscos.h
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/wii.cpp b/src/platforms/wii.cpp
index ef7550cc..6f96dbc1 100644
--- a/src/platforms/wii.cpp
+++ b/src/platforms/wii.cpp
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/wii.h b/src/platforms/wii.h
index f5571b09..4236dfa2 100644
--- a/src/platforms/wii.h
+++ b/src/platforms/wii.h
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/xdg.cpp b/src/platforms/xdg.cpp
index 458b73a3..4226ac05 100644
--- a/src/platforms/xdg.cpp
+++ b/src/platforms/xdg.cpp
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *
diff --git a/src/platforms/xdg.h b/src/platforms/xdg.h
index 43efbf45..d6a86b64 100644
--- a/src/platforms/xdg.h
+++ b/src/platforms/xdg.h
@@ -6,6 +6,8 @@
  * Part of the OpenJazz project
  *
  * @par Licence:
+ * Copyright (c) 2015-2023 Carsten Teibes
+ *
  * OpenJazz is distributed under the terms of
  * the GNU General Public License, version 2.0
  *