feat(displayhook): add register_hook/unregister_hook to ZMQShellDisplayHook#1522

rgbkrk wants to merge 2 commits into

ipython:mainipython/ipykernel:mainfrom

rgbkrk:feat/displayhook-hook-chainrgbkrk/ipykernel:feat/displayhook-hook-chainCopy head branch name to clipboard