Add test for TimeDelta
Add test for TimeDelta

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