Partially implemented. Most of it comes from opy_nmesh.c, plus needed
changes to integrate in into exppython.
* Added helper submodule vector, needed by NMesh.
* Minor changes in other files.
Partially implemented. Most of it comes from opy_nmesh.c, plus needed
changes to integrate in into exppython.
* Added helper submodule vector, needed by NMesh.
* Minor changes in other files.