Refactor TickLabels drawing code in WCSAxes
Refactor TickLabels drawing code in WCSAxes

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