Phased Solver

Bugfixes

Phased Solver app: debugging

Phased Solver app: show the moveIndex

Progress with PhasedSolver.
Introduce an abstracted TargetQuats.

Progress with PhasedSolver.
Turns out 3x3 beginner phase 3 can still fail.

3x3 beginner should 'mostly' work now (the 'perm of the LL corners' phase can still fail - we need to define appropriate PhaseRegex here)

Seriously re-structure the architecture in preparation for different types of Phases (PhaseRegex!)

Bugfix for the PhasedSolver app.

Make the Phases more generic - now subphases can contain any subsets of the cubits involved in the whole phase.

Solving the white cross and white corners do work now.