insert_worm to picks up additional expression data
insert_worm to picks up additional expression data

Resolves #284

Searches OpenWormData/aux_data/expression_data for innexin, neuropeptide, neurotransmitter and receptor expression data not already added.

openworm/PyOpenWorm,openworm/PyOpenWorm,gsarma/PyOpenWorm,gsarma/PyOpenWorm