There's a real crash from the field in Firebase Crashlytics which must mean that Cubit.returnRotationAngle() returned null.Leave some message in case this happens again.
Add a 'withdraw move' button to the Solving UI state.
Progress implementing RubikCube.retObjectString()
Progress with the 3x3x3 Solver.
More support for the 3x3x3 Solver: more of the actual 3x3x3 solver mechanism.