also add in 1.1.1 section to changelog
also add in 1.1.1 section to changelog

[ci skip]

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