TwistyPuzzleLib

further fixes for ghosts

This time it really looks like the Ghost model is finally correct, and the 2x2, 4x2 and 6x2 Ghosts do work (except automatic moves and possibly backing ghost moves)

Ghost....

minor

completely separate out the Ghost part of the puzzle to its own class, TwistyObjectGhost.

move alll ghostStuff to TwistyObjectControllable

progress with Ghosts. Still far off...

another fix for the automatic rotations of Ghosts.

We still seem to be sometimes losing the correct mGhostAxis during automatic rotations.

partial fix for the automatic rotations of Ghosts.

unify test ghost classes into one