Adding workaround to the sphinx builds until the new astropy-helpers is out by setting the version
Adding workaround to the sphinx builds until the new astropy-helpers is out by setting the version

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