Temporarily pinning sphinx <2.2 [skip travis]
Temporarily pinning sphinx <2.2 [skip travis]

astropy/astropy,MSeifert04/astropy,pllim/astropy,stargaser/astropy,saimn/astropy,stargaser/astropy,mhvk/astropy,lpsinger/astropy,stargaser/astropy,mhvk/astropy,aleksandr-bakanov/astropy,pllim/astropy,MSeifert04/astropy,larrybradley/astropy,astropy/astropy,pllim/astropy,saimn/astropy,saimn/astropy,dhomeier/astropy,astropy/astropy,dhomeier/astropy,lpsinger/astropy,dhomeier/astropy,saimn/astropy,mhvk/astropy,lpsinger/astropy,pllim/astropy,StuartLittlefair/astropy,larrybradley/astropy,dhomeier/astropy,larrybradley/astropy,StuartLittlefair/astropy,mhvk/astropy,astropy/astropy,saimn/astropy,MSeifert04/astropy,aleksandr-bakanov/astropy,StuartLittlefair/astropy,dhomeier/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,pllim/astropy,lpsinger/astropy,MSeifert04/astropy,stargaser/astropy,larrybradley/astropy,astropy/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,mhvk/astropy,StuartLittlefair/astropy