Add GroupedTable groups iterator
Add GroupedTable groups iterator

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