GstlalHDF5ClassifierData: fix issue with setting default values in numpy arrays
io.py: GstlalHDF5ClassifierData: fix issue with setting default values to ndarrays with only one row, added workaround for older versions of numpy
io.py: GstlalHDF5ClassifierData: fix issue with setting default values to ndarrays with only one row, added workaround for older versions of numpy