Add initial stack tests
Add initial stack tests

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