Adjust minimum numpy version.
Adjust minimum numpy version.

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