clean wcs tests
clean wcs tests

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