Micro-optimize: don't instantiate new hash for subject metadata
Micro-optimize: don't instantiate new hash for subject metadata

parrish/Panoptes,zooniverse/Panoptes,astopy/Panoptes,srallen/Panoptes,camallen/Panoptes,zooniverse/Panoptes,zooniverse/Panoptes,astopy/Panoptes,zooniverse/Panoptes,parrish/Panoptes,parrish/Panoptes,camallen/Panoptes,camallen/Panoptes,srallen/Panoptes,camallen/Panoptes,srallen/Panoptes,astopy/Panoptes,astopy/Panoptes,parrish/Panoptes,srallen/Panoptes