Added more kernel tests.
Added more kernel tests.

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