Use `ASPerformOnMainThread` helper. `-fetchData` improvements.
Use `ASPerformOnMainThread` helper. `-fetchData` improvements.

aaronschubert0/AsyncDisplayKit,rmls/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,Xinchi/AsyncDisplayKit,george-gw/AsyncDisplayKit,maicki/AsyncDisplayKit,smyrgl/AsyncDisplayKit,harryworld/AsyncDisplayKit,smyrgl/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,bimawa/AsyncDisplayKit,yufenglv/AsyncDisplayKit,rmls/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,maicki/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,harryworld/AsyncDisplayKit,george-gw/AsyncDisplayKit,yufenglv/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,samhsiung/AsyncDisplayKit,yufenglv/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,flovouin/AsyncDisplayKit,JetZou/AsyncDisplayKit,Xinchi/AsyncDisplayKit,rmls/AsyncDisplayKit,bimawa/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,george-gw/AsyncDisplayKit,lappp9/AsyncDisplayKit,gazreese/AsyncDisplayKit,JetZou/AsyncDisplayKit,gazreese/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,flovouin/AsyncDisplayKit,gazreese/AsyncDisplayKit,Xinchi/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,flovouin/AsyncDisplayKit,lappp9/AsyncDisplayKit,rmls/AsyncDisplayKit,JetZou/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,harryworld/AsyncDisplayKit,maicki/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,Xinchi/AsyncDisplayKit,yufenglv/AsyncDisplayKit,rmls/AsyncDisplayKit,samhsiung/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,bimawa/AsyncDisplayKit,smyrgl/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,JetZou/AsyncDisplayKit,harryworld/AsyncDisplayKit,JetZou/AsyncDisplayKit,levi/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,facebook/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,maicki/AsyncDisplayKit,maicki/AsyncDisplayKit,samhsiung/AsyncDisplayKit,Adlai-Holler/AsyncDisplayKit,levi/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,chrisdanford/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,hannahmbanana/AsyncDisplayKit,romyilano/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,gazreese/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,lappp9/AsyncDisplayKit,romyilano/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,flovouin/AsyncDisplayKit,samhsiung/AsyncDisplayKit,bimawa/AsyncDisplayKit,aaronschubert0/AsyncDisplayKit,yufenglv/AsyncDisplayKit,romyilano/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,jellenbogen/AsyncDisplayKit,harryworld/AsyncDisplayKit,george-gw/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,levi/AsyncDisplayKit,garrettmoon/AsyncDisplayKit,rahul-malik/AsyncDisplayKit,facebook/AsyncDisplayKit,romyilano/AsyncDisplayKit,flovouin/AsyncDisplayKit,tomizimobile/AsyncDisplayKit,Xinchi/AsyncDisplayKit,facebook/AsyncDisplayKit,levi/AsyncDisplayKit,smyrgl/AsyncDisplayKit,lappp9/AsyncDisplayKit,facebook/AsyncDisplayKit,levi/AsyncDisplayKit,nrcmedia/AsyncDisplayKit,nrcmedia/AsyncDisplayKit