Replaces the current Action.
Though I don't feel like we should worry about this much just yet until we have actual designs and can see how it looks. It's very well possible that we use different transitions here...
Add screen selection tabcontrol to the editor
Only convert chords into strong hits for mania -> taiko
Fix TestCaseContextMenu not being updated inline with previous changes
Clean up Wave in WaveOverlayContainer
Remove single usage of dynamic and stop referencing Microsoft.CSharp.dll
Make import tests more resilient to race condition failures
Also centralises wait-or-assert logic.
Editor timeline fixes
Make APIAccess's state only privately settable
Fix yellow line in login overlay not following size correctly
Move all APIAccess State changes to the local thread
Also allows right click context menu to correctly extrude beyond the local masking.