merge

astropy.utils.metadata.merge(left, right, merge_func=None, metadata_conflicts='warn', warn_str_func=<function _warn_str_func at 0x7fc4aac9f268>, error_str_func=<function _error_str_func at 0x7fc4aac9f2f0>)

Merge the left and right metadata objects.

This is a simplistic and limited implementation at this point.