Unit tests for desktop game project.
Implement notifications.
Add pink glow to cursor because I can't fucking see it against white.
Some Warning Fixes
Add hit object stacking.
Preliminary CJK support
Audio device selection
Overlay improvements
Fix major memory leak when MusicController is hidden
# Conflicts: # osu-framework # osu.Game/Overlays/Options/Sections/Audio/AudioDevicesOptions.cs
Allows closing the MusicController using escape.