Use a non-broken opentk library
- Hidden, Size and Scale
- Hidden, Size and Scale - made Repeats an SliderStep instead
- Hidden, Size and Scale - also fix Auto still missing because no judgement was created
+ move duration calculation to not be done twice + made Slider / Spinner private again as they are not accessed externally anymore
NuGet - 10/10 would use again
Closes #1763.
Closes #1757
Select pause buttons only on mouse move
Fix crash on rapid selection at song select
We need to still perform selection if selectedBeatmap itself is null
+ minor cleanup
As it turns out, native directory separators are not supported
Fix regression during merges
Fix slider repeats playing sample twice
Add a bindable Enabled flag to NotificationManager
Fix notification overlay layout and scheduled tasks being delayed
Fix beatmap wedge appearing with incorrect info on entering song select