-Added macro support for shader compiler
Added dynamic vertex buffer with no default
Added macro options for shader compiler
Geometry has Tag and PrimitiveType properties
-Added primitive descriptors
-Added SegmentZ
-Box, Cylinder,Sphere,Grid and IcoGrid store Descriptor
Descriptors for isocahedron and octahedron
-Quad,Segment,Tetrahedron, Torus and RoundRect have descriptors
-Added center option for round rect