Update CHANGES.rst
Update CHANGES.rst

Properly add reference to #3015.
bsipocz/astropy,lpsinger/astropy,StuartLittlefair/astropy,saimn/astropy,DougBurke/astropy,kelle/astropy,astropy/astropy,pllim/astropy,kelle/astropy,larrybradley/astropy,dhomeier/astropy,astropy/astropy,saimn/astropy,lpsinger/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,StuartLittlefair/astropy,saimn/astropy,joergdietrich/astropy,larrybradley/astropy,bsipocz/astropy,mhvk/astropy,bsipocz/astropy,pllim/astropy,DougBurke/astropy,funbaker/astropy,pllim/astropy,pllim/astropy,mhvk/astropy,tbabej/astropy,joergdietrich/astropy,larrybradley/astropy,astropy/astropy,mhvk/astropy,tbabej/astropy,astropy/astropy,AustereCuriosity/astropy,AustereCuriosity/astropy,funbaker/astropy,DougBurke/astropy,DougBurke/astropy,MSeifert04/astropy,funbaker/astropy,lpsinger/astropy,dhomeier/astropy,larrybradley/astropy,lpsinger/astropy,mhvk/astropy,mhvk/astropy,dhomeier/astropy,tbabej/astropy,StuartLittlefair/astropy,dhomeier/astropy,MSeifert04/astropy,MSeifert04/astropy,aleksandr-bakanov/astropy,bsipocz/astropy,lpsinger/astropy,stargaser/astropy,MSeifert04/astropy,AustereCuriosity/astropy,stargaser/astropy,pllim/astropy,stargaser/astropy,kelle/astropy,kelle/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,funbaker/astropy,joergdietrich/astropy,astropy/astropy,joergdietrich/astropy,stargaser/astropy,kelle/astropy,dhomeier/astropy,saimn/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,saimn/astropy,AustereCuriosity/astropy,tbabej/astropy,joergdietrich/astropy,tbabej/astropy,aleksandr-bakanov/astropy