Started implementing the world_axis_object_components and world_axis_object_classes properties
Started implementing the world_axis_object_components and world_axis_object_classes properties

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