oops - leftover bug from last PR where differential_class not passed on when repr subclass overwrites represent_as
oops - leftover bug from last PR where differential_class not passed on when repr subclass overwrites represent_as

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