TwistyPuzzleLib

Preparation for Mixup Cube: take advantage of the recent bump in MAJOR_VERSION number and change the format of basicAngles to int[][] 'per-axis-per-layer' [ Mixup Cube has different basicAngle in its middle layers (8) - and different in its edge layers (4) ]

Cleanups.

Convert Ulti, Jing, Pyra, Diamond, Dinos, Redi, Skewbs, Ivy & Rex to the new scheme where the quaternion group is computed automatically.

Minor.

Fix setDefaultRotation() when changing an object; do it at exactly the right time when the 'old' object has already disappeared, but the new hasn't been attached to the Nodee yet.

Fix problems with TwistyObjectNode 'object scale' property.
Now this property is not part of the Node at all, but its initial value passed to the object in its constructor.

Further simplify ObjectType

Major change: separate the notion of a TwistyObject and its Node. Now,

1) the Node stays when we change objects (this makes transitions faster)
2) it's possible to just create an Object without adding it to the Screen (now app needs to explicitly create the Node and add it to its Screen itself)

- remove the retarded NODE_RATIO from TwistyObject
- more correctly estimate Cuboid's 'realSize' as an average of their 3 sizes.

Relax objectlib's requirements: it can be displayed not only on top of a DistortedScreen, but any DistortedFramebuffer.