Clean up on_data_changed to always be dispatched through adapter.
Clean up on_data_changed to always be dispatched through adapter.

kivy/kivy,Cheaterman/kivy,akshayaurora/kivy,aron-bordin/kivy,kived/kivy,jegger/kivy,LogicalDash/kivy,darkopevec/kivy,tony/kivy,kivy/kivy,LogicalDash/kivy,inclement/kivy,tony/kivy,Cheaterman/kivy,LogicalDash/kivy,el-ethan/kivy,Cheaterman/kivy,akshayaurora/kivy,kived/kivy,matham/kivy,jegger/kivy,Cheaterman/kivy,rafalo1333/kivy,aron-bordin/kivy,aron-bordin/kivy,jkankiewicz/kivy,andnovar/kivy,matham/kivy,kived/kivy,rafalo1333/kivy,bionoid/kivy,KeyWeeUsr/kivy,KeyWeeUsr/kivy,jkankiewicz/kivy,janssen/kivy,janssen/kivy,LogicalDash/kivy,rnixx/kivy,kivy/kivy,tony/kivy,manthansharma/kivy,autosportlabs/kivy,akshayaurora/kivy,matham/kivy,jkankiewicz/kivy,rnixx/kivy,el-ethan/kivy,janssen/kivy,autosportlabs/kivy,manthansharma/kivy,jkankiewicz/kivy,matham/kivy,andnovar/kivy,janssen/kivy,manthansharma/kivy,darkopevec/kivy,rafalo1333/kivy,autosportlabs/kivy,KeyWeeUsr/kivy,jegger/kivy,el-ethan/kivy,aron-bordin/kivy,rnixx/kivy,inclement/kivy,darkopevec/kivy,bionoid/kivy,bionoid/kivy,andnovar/kivy,bionoid/kivy,manthansharma/kivy,darkopevec/kivy,KeyWeeUsr/kivy,jegger/kivy,inclement/kivy