* Set minimum CMake version to 3.15
* Update icon because come on the previous one was bad
* Show sleep block level counter in CPU details
* Add global shortcut to make screenshots, and update some tests to use
getkey()-based methods to support these screenshots
* Fix the USB log freezing because my brain was gone when I made it
* Implement actually useful stuff in the USB test
* Added the switch menu
* Added the keyboard menu on fx-CG 50
* Added a (currently unused) bold 8x9 font on fx-CG 50
* Displayed something decent in the "Image Rendering" test on fx-CG 50
* Changed F-keys all around to unify the semantics
* Improved the layout of the RAM detection test
* Adapted TMU/ETMU display to the new mpu/timer.h definitions
* Added a timer selector in the F-key bar in the timer test
* Added an "external libraries" tab that will also test libc features
* Added a libimg test
Lephenixnoir
Lephe