changed quantity repr to act more like ndarray's repr
changed quantity repr to act more like ndarray's repr

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