Finish fix for interop with new numba interface.
Finish fix for interop with new numba interface.

mwiebe/dynd-python,insertinterestingnamehere/dynd-python,ContinuumIO/dynd-python,insertinterestingnamehere/dynd-python,ContinuumIO/dynd-python,izaid/dynd-python,mwiebe/dynd-python,insertinterestingnamehere/dynd-python,insertinterestingnamehere/dynd-python,izaid/dynd-python,izaid/dynd-python,izaid/dynd-python,mwiebe/dynd-python,ContinuumIO/dynd-python,ContinuumIO/dynd-python,mwiebe/dynd-python