fix: bad hdf5 last_modified date handling with certain combinations of pandas + numpy due to inconsistent behaviors with np.nan equality checking
fix: bad hdf5 last_modified date handling with certain combinations of pandas + numpy
due to inconsistent behaviors with np.nan equality checking

cameronbracken/ulmo,nathanhilbert/ulmo,ocefpaf/ulmo,cameronbracken/ulmo,ocefpaf/ulmo,nathanhilbert/ulmo