Magic Cube

Remove statics from the Jing class.

Remove statics from the Ivy class.

Remove statics from the Helicopter class.

Remove statics from the Dino classes.

Remove statics from the Diamond classes.

Remove more statics from the Bandaged Cube classes.

Remove statics from the Cube classes.

Remove statics from the Bandaged Cube classes.

Convert Square-2 to the new generic scrambling algorithm.

In order to do it we need to introduce a third, artificial rotational axis - otherwise the algorithm would make it impossible to rotate the lower layer and immediatelly after - the upper.

Fix the Square-2 isSolved() (it was wrong even before!)