Added useful error to specifically report that non-scalar Quantities cannot be converted to scalars
Added useful error to specifically report that non-scalar Quantities cannot be converted to scalars

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