nanshe/nanshe/expanded_numpy.py: Change `__date__` to conform to the standard.
nanshe/nanshe/expanded_numpy.py: Change `__date__` to conform to the standard.

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