update changelog for new version assignments
update changelog for new version assignments

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