[Input] Moved mouse cursor tracking to Mouse from adapters (closes #212)
[Dub] Upgraded vibe.d to final 0.7.21 release
[Tests] Added unittest to scheduleDelayedTask
[Input] Fixed SDL cursor coordinates being inversed
[Dub] Fixed looking for win32 files on not Windows
[Graphics] Deprecated Linux and Win32Gl adapters in favor of SDL
[CI] Added (but allow failed) builds for LDC and GDC
[Adapters] Upgraded to newest version of SDL
[Animation] Fixed animation folder and added warnings for improper animation structures.