Workaround py3.5 appveyor failures by using the previous VS build image
Workaround py3.5 appveyor failures by using the previous VS build image

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