functions for copying UntypedArrays and data within them without knowing type information
corners() function to return box corners in a flat array
split_along_edge, surface_components, nonmanifold vertex splitting, and trickle down effects due to changes in assert_consistent interface
make a c++ cube_mesh, and adjust interface for python version
add xzy swizzle to Vector3d
initial check-in lower hull
Merge branch 'master' of github.com:otherlab/geode
changes adjusting to Hashtable iterators returning tuples