A number of the nan<x> functions previously lacked parameters that were
present in their <x>-based counterpart, e.g. the where parameter was
present in ~numpy.mean but absent from ~numpy.nanmean.
The following parameters have now been added to the nan<x> functions:
- nanmin:
initial&where - nanmax:
initial&where - nanargmin:
keepdims&out - nanargmax:
keepdims&out - nansum:
initial&where - nanprod:
initial&where - nanmean:
where - nanvar:
where - nanstd:
where