changes xorarr back to x for cleaner API
changes xorarr back to x for cleaner API

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