support np.datetime64[foo] dtypes
string handling to/from numpy
discover(long)
discover: sequences of records
py3 compatibility with discover(long)
binstar support 2.6, 2.7, 3.3, 3.4 explicitly
Merge pull request #77 from mrocklin/date-time-discovery

More robust datetime and string handling with NumPy
Convert 'string' to a numpy object dtype with h5py style metadata