Update CHANGES.rst
Update CHANGES.rst

Added #666 bug fix.

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