Further coverage.
Further coverage.

Be more specific about numpy 1.17

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