Update changelog.
Update changelog.

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