Improve the Effects Dialog so it looks good on 'thin' screens ( 720x1440 )
(Hopefully) make the Dialogs NOT disappear on clicks outside (previously this wasn't working on Android 9).Lower API requirements to 21.
Each object size now has its own number of levels (not always 18!)
Reorganize UI of the Play state.
Progress with the 3x3x3 Solver.
More support for the 3x3x3 Solver: more of the actual 3x3x3 solver mechanism.