Display of 0-D datetime64 arrays is odd. #4337
Description
In [51]: b = array(datetime(2009, 1, 1, 0, 0), 'datetime64[us]')
In [52]: b
Out[52]: array(datetime.datetime(2009, 1, 1, 0, 0), dtype='datetime64[us]')
In [53]: array((b,b))
Out[53]: array(['2008-12-31T17:00:00.000000-0700', '2008-12-31T17:00:00.000000-0700'], dtype='datetime64[us]')
In [54]: b[()]
Out[54]: numpy.datetime64('2008-12-31T17:00:00.000000-0700')