This allows themes to be incomplete (with missing values), which leads to following benefits:
- Older themes that have not been updated to have the latest colors will not result in compilation errors
- If you only want to change one single color you don't have to copy the whole json file which makes it much more readable

…ently this files

This allow Escher to build successfully without calculation app

* [CI] Fix 3DS try 1

* [CI] Fix 3DS try 2

* [CI] Fix 3DS try 3

* [CI] Fix 3DS try 4

* [CI] Fix 3DS try 5

* [CI] Fix 3DS try 6

* [CI] Fix 3DS try 7

* [CI] Fix 3DS try 8

* [CI] Fix 3DS try 9

* [CI] Fix 3DS try 10

* [CI] Fix 3DS try 11

* [CI] Fix 3DS try 12

* [CI] Fix 3DS try 13

* [CI] Fix 3DS try 14

* [CI] Fix 3DS try 15

* [CI] Fix 3DS try 16

* [CI] Fix 3DS try 17

* [CI] Fix 3DS try 18

* [CI] Fix 3DS try 19

* [CI] Make other simulators than 3DS working

* [CI] Fix 3DS without breaking others simulators try 1

* Apply suggestions from code review

* Improve SDL assert

* Fix SDL assert

* Fix SDL assert 2

* [CI] Enable iOS, macOS and 3DS tests by default

* [CI] Change epsilon-sdk tap url

* Revert "[CI] Change epsilon-sdk tap url"

This reverts commit 9516607.

* Initial test - working on Linux

* Try to make it work with liba

* Stop using liba and the filesystem

* IT WORKS

* Key input, full res, fix some of the crashes

* Fix the hang when doing calculations

* Add some more key mappings

* Fix the square root issue

* Icons

* Better key mappings, brightness control, better gamma correction, more effficient framebuffer

* Cleanup stage 1

* Cleanup stage 2

* Make the build system build a g3a

* Make it not exit when you press the menu button

* Add Casio port to README

* Use omega-master instead of omega-dev

* Fix mistake with cherry-picking in the README

* Fix internal storage crash

* Fix compile error on Numworks calculators

* Upsilon branding

* Sharper icon

* Make the CI work

* Add power off and improve menu

* Map Alpha + up/down to the brightness shortcut

* Add missing file

* Fix web CI build

* Revert "Fix web CI build"

This reverts commit f19657d.

* Change "prizm" to "fxcg"

* Add FASTLOAD option for Add-in Push

* Add some charatcers to the catalog on Casio and improve key mappings

* Build with -Os -flto

* Disable LTO for now as it's causing crashes

* Put back the fonts I accidently changed

I'd like to add an option for this though as I prefer the ones from Epsilon

Close #327

…gth in the existing ones (#331)

* [it.i18n] [apps/code] Add missing translations

* [it.i18n] [apps/reader] Fix typo

* [it.i18n] [apps/external, apps/setting] Add missing translations + fixes

…7th argument

* Fix the nspire port (ergo: framebuffer functions, shift/ctrl don't corrupt things due to weird draw calls)

* cleanup the k_csdk changes

This is due to a missing check in the interruptible sleep function which was not
checking if the delay was negative, then was passed to the
Ion::Timing::usleep function, who only takes signed values

 into upsilon-dev

* Mark 21.2.0 as safe

* Update messages.h

 into upsilon-dev