Wish: Subdivison for display and rendering as object property

McNeel have confirmed that the SubD development will not result in anything for V6 and the development will continue in the WIP for v7 when V6 is released. So the current SubDfromMesh will sadly not be available in V6 (but I keep my fingers crossed for a change of mind as even the current state is a great asset.)

Ngons are in a way just polygonfaces that are coplanar and the internal edges are hidden.