advanced_numpy: Added some helper functions as part of refactoring to aid in using NumPy structured array types.
advanced_numpy: Added some helper functions as part of refactoring to aid in using NumPy structured array types.

nanshe-org/nanshe,jakirkham/nanshe,nanshe-org/nanshe,jakirkham/nanshe,DudLab/nanshe,DudLab/nanshe