Added changelog entries for the first batch of undocumented new features and fix
Added changelog entries for the first batch of undocumented new features and fix

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