Added the handling of value=None within _update_console().
Added the handling of value=None within _update_console().

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