fix: allow wm_oid string conversion to work in a way that  is compatible with pandas 0.13.1
fix: allow wm_oid string conversion to work in a way that  is compatible with pandas 0.13.1

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