New Features:
- OpenGLDevice: Added support for KHR_debug, in addition to ARB_debug_output
Fixes:
- SpriteBatch/SpriteFont: Various optimizations centered around redundant array accesses
- VideoPlayer: Added more safety checks to Dispose method
- OpenGLDevice: Independent write mask support now checks for all known variants of glColorMaski
- SDL2_FNAPlatform:
- Added a mouse state fallback for platforms without global mouse support
- Added an Environment.Directory fallback for platforms without AppDomain.CurrentDomain.BaseDirectory
- Possible safety fix for GetStorageRoot on macOS