Rearranging support in playlist
Adjust HP penalties/bonuses based on beatmap specification
Now handles drag at a PlaylistList.ItemsScrollContainer level (private class), and PlaylistList itself is no longer a Container so it only supports adding BeatmapSets. Sorry for the rewrite x.x.
Fix ObjectDisposal exceptions due to lingering event binds
Add support for hiding individual beatmap difficulties
Fix crash on random selection from a previously null selection
Update UI controls in line with framework changes