copy edit io/fits/index
copy edit io/fits/index

StuartLittlefair/astropy,larrybradley/astropy,larrybradley/astropy,StuartLittlefair/astropy,lpsinger/astropy,pllim/astropy,mhvk/astropy,MSeifert04/astropy,lpsinger/astropy,lpsinger/astropy,saimn/astropy,mhvk/astropy,saimn/astropy,saimn/astropy,saimn/astropy,saimn/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,mhvk/astropy,stargaser/astropy,stargaser/astropy,dhomeier/astropy,pllim/astropy,MSeifert04/astropy,MSeifert04/astropy,astropy/astropy,stargaser/astropy,pllim/astropy,pllim/astropy,mhvk/astropy,dhomeier/astropy,MSeifert04/astropy,dhomeier/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,astropy/astropy,astropy/astropy,pllim/astropy,mhvk/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,larrybradley/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,astropy/astropy,StuartLittlefair/astropy,larrybradley/astropy,lpsinger/astropy,stargaser/astropy,dhomeier/astropy,astropy/astropy,aleksandr-bakanov/astropy