Update CHANGES.rst
Update CHANGES.rst

Added #666 bug fix.
lpsinger/astropy,lpsinger/astropy,tbabej/astropy,mhvk/astropy,MSeifert04/astropy,pllim/astropy,dhomeier/astropy,AustereCuriosity/astropy,bsipocz/astropy,lpsinger/astropy,AustereCuriosity/astropy,StuartLittlefair/astropy,MSeifert04/astropy,larrybradley/astropy,stargaser/astropy,kelle/astropy,joergdietrich/astropy,DougBurke/astropy,astropy/astropy,StuartLittlefair/astropy,kelle/astropy,AustereCuriosity/astropy,astropy/astropy,kelle/astropy,joergdietrich/astropy,tbabej/astropy,pllim/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,joergdietrich/astropy,DougBurke/astropy,MSeifert04/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,stargaser/astropy,saimn/astropy,saimn/astropy,saimn/astropy,bsipocz/astropy,saimn/astropy,funbaker/astropy,bsipocz/astropy,StuartLittlefair/astropy,lpsinger/astropy,stargaser/astropy,kelle/astropy,funbaker/astropy,tbabej/astropy,dhomeier/astropy,pllim/astropy,pllim/astropy,larrybradley/astropy,DougBurke/astropy,mhvk/astropy,AustereCuriosity/astropy,mhvk/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,MSeifert04/astropy,bsipocz/astropy,StuartLittlefair/astropy,funbaker/astropy,pllim/astropy,dhomeier/astropy,dhomeier/astropy,joergdietrich/astropy,larrybradley/astropy,AustereCuriosity/astropy,DougBurke/astropy,mhvk/astropy,kelle/astropy,aleksandr-bakanov/astropy,astropy/astropy,funbaker/astropy,astropy/astropy,saimn/astropy,mhvk/astropy,StuartLittlefair/astropy,joergdietrich/astropy,larrybradley/astropy,tbabej/astropy,astropy/astropy,tbabej/astropy,stargaser/astropy