Blender Git Loki

PyAPI: support multi-dimensional arrays for bpy.props vector types

- Multi-dimensional boolean, int and float vector types are supported.
- A sequence of int's for the "size" is used to declare dimensions.
- Nested sequences are required for default arguments.

Now it's possible to define matrix properties, for e.g:

bpy.props.FloatVectorProperty(size=(4, 4), subtype='MATRIX')