Distorted Android

A lot of changes.

1) main vertex shader: remove support for degree_object. This functionality will hopefully come back when we introduce other than circular regions.
2) MeshBase: remove the need to set a Bounding box (this is the point of the whole thing - we wanted to get rid of this so that the advances in MeshJoined will be easier)...

Convert the third app, Transparency, to the new MeshBase.setStretch-less API ( use VertexEffectScale instead )

Convert the second app, Flag, to the new MeshBase.setStretch-less API ( use VertexEffectScale instead )

Convert the first app, Inflate, to the new MeshBase.setStretch-less API ( use VertexEffectScale instead )

fix for centers of Matrix effects.

new VertexEffectShear

new VertexEffectScale

new VertexEffectRotate

Add the first two VERTEX 'pseudo-matrix' effects: VERTEX_MOVE & VERTEX_QUATERNION i.e. implementations of those two MATRIX effects in VERTEX queue.

The point(s):

1) preparation for the upcoming MeshBase.preApply(VertexEffect effect) API that's going to supersede the current much more limited MeshBase.apply(MatrixEffect effect)...

Move to AndroidX, target API level 29.