removed some dead code, renamed callback to postMessage
removed some dead code, renamed callback to postMessage

fhinkel/InteractiveShell,YueRen/tryM2,antonleykin/InteractiveShell,fhinkel/tryM2,fhinkel/tryM2,antonleykin/InteractiveShell,fhinkel/InteractiveShell,YueRen/tryM2,fhinkel/InteractiveShell,YueRen/tryM2,antonleykin/InteractiveShell,fhinkel/tryM2,fhinkel/tryM2,fhinkel/InteractiveShell