make human_file_size accept astropy quantities
make human_file_size accept astropy quantities

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