Add changelog entry. [ci skip]
Add changelog entry. [ci skip]

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