Add a changelog entry for #507
Add a changelog entry for #507

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