new maps2dict_of_props function to create a dict of properties for a spaxel
new maps2dict_of_props function to create a dict of properties for a spaxel

sdss/marvin,sdss/marvin,bretthandrews/marvin,sdss/marvin,albireox/marvin,albireox/marvin,bretthandrews/marvin,albireox/marvin,bretthandrews/marvin,albireox/marvin,bretthandrews/marvin,sdss/marvin