Magic Cube

Major abstraction - automatically compute the 'computeRowFromOffset()' function from CUTS.
Still one thing left: it appears like the CUTS of Mega/Kilominxes are not correct.

Abstract the next function, computeRowFromOffset(), out of the individual Movement classes.
Still two issues:

1) mysterious 1.5 multiplier in Movement12
2) in Movement8, moving the offset works only if the rotAxis are face-turning, i.e. they connect the centers of the opposing faces of the octahedron.

Make computing the offset in the Movement class more correct. From now on, in the center of the face the offset if always 0 regardless of the axis.
Before it would always assume that we can add DIST2D to the offset which is originated at the center of the face and this way get an offset which spans from 0 to height of the face. This is not always true - conterexample: half of the triangluar faces of an octahedron which are 'upside down'

Abstract out some methods from the Movement classes. only two remain now: rowFromOffset and enabledAxis.

Make Ivy standard size (cube size=2, i.e. equal to numLayers so that DIST2D and DIST3D are standard)

Square-1: progress with movement.

Beginnings of the Ivy Cube.