Update astropy-helpers to v2.0.1
Update astropy-helpers to v2.0.1

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