Allow for group_by keys to be Table
Allow for group_by keys to be Table

funbaker/astropy,aleksandr-bakanov/astropy,bsipocz/astropy,saimn/astropy,larrybradley/astropy,dhomeier/astropy,lpsinger/astropy,funbaker/astropy,saimn/astropy,dhomeier/astropy,joergdietrich/astropy,dhomeier/astropy,AustereCuriosity/astropy,saimn/astropy,tbabej/astropy,astropy/astropy,DougBurke/astropy,funbaker/astropy,dhomeier/astropy,AustereCuriosity/astropy,lpsinger/astropy,kelle/astropy,stargaser/astropy,pllim/astropy,DougBurke/astropy,aleksandr-bakanov/astropy,astropy/astropy,MSeifert04/astropy,joergdietrich/astropy,saimn/astropy,mhvk/astropy,pllim/astropy,stargaser/astropy,larrybradley/astropy,AustereCuriosity/astropy,lpsinger/astropy,funbaker/astropy,AustereCuriosity/astropy,StuartLittlefair/astropy,mhvk/astropy,mhvk/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,mhvk/astropy,MSeifert04/astropy,StuartLittlefair/astropy,kelle/astropy,MSeifert04/astropy,lpsinger/astropy,astropy/astropy,AustereCuriosity/astropy,joergdietrich/astropy,aleksandr-bakanov/astropy,DougBurke/astropy,larrybradley/astropy,tbabej/astropy,tbabej/astropy,tbabej/astropy,kelle/astropy,joergdietrich/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,larrybradley/astropy,pllim/astropy,stargaser/astropy,bsipocz/astropy,saimn/astropy,lpsinger/astropy,mhvk/astropy,StuartLittlefair/astropy,pllim/astropy,kelle/astropy,pllim/astropy,astropy/astropy,MSeifert04/astropy,kelle/astropy,astropy/astropy,tbabej/astropy,larrybradley/astropy,stargaser/astropy,DougBurke/astropy,joergdietrich/astropy,bsipocz/astropy,bsipocz/astropy