Add a key up delay for relax mod presses
Implement a rearrangeable beatmap playlist control
Fix player loading sequence continuing even when a priority overlay is visible
Improve PlayerLoader code quality
Fix relax mod not working correctly on beatmaps with overlapping sliders/spinners
Make beatmap detail area abstract
Fix osu! gameplay cursor not adjusting to mod/convert circle size changes
Fix not being able to seek using scroll wheel in timeline while playing track
Add a container type to easily hide online content when not online