Solving time - display it more accurately.
Make the Scores Dialog screen-size invariant.
Fix for a crasher seen in the field.
Move to AndroidX, target API level 29.
Each object size now has its own number of levels (not always 18!)
Reorganize UI of the Play state.
More support for the 3x3x3 Solver: more of the actual 3x3x3 solver mechanism.