Update helpers to v4.0.1
Update helpers to v4.0.1

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