Blender Git Loki

rewrote this script, it was the most out of date script and had some errors that are solved in the new script.
- moved to the weightpaint menu
- Use a group for envelope objects, no special names.
- Can use non mesh data for envalopes (anything that can be converted into a mesh - metaballs, text, surface)
- Dosnt rely on applying loc/size/rot for it to work properly
- Uses a good point-inside-mesh method (optimized with mesh and face bounding checks)
- uses Mesh instead of NMesh

todo, only update active vgroup