Add regression test for #366: precision of Time instantiation by epoch
Add regression test for #366: precision of Time instantiation by epoch

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