Add mania column background skinning
Fix animated follow points not (re)animating after rewind
Fix osu!catch catcher hit area being too large
Implement basis for mania skinning
Fix relax mod pressing too many keys
Also added xmldoc for new shorthand method.
Support widescreen per-layer storyboard masking
Fix replay imports failing for certain mod combinations
Fix catcher test resources being at wrong dpi definition
Add support for HitCircleOverlayAboveNumber legacy skin property