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
Use Span for OsuColour.FromHex
Fix editor hit objects displaying incorrectly after StartTime change
Update placement blueprint's position more often
Remove the concept of a "current" item from multiplayer rooms