ipython/ipython — pull request #6216 by SylvainCorlay (2014-07-26 15:53:24+00:00)
Title: Unregistering comms in Comm Manager

(I am still adding to this)

- [x] Deleting a comm now unregisters the comm (because creating it already registers it).
Unregistering the comm does not close it anymore (because registering the comm does not open it).
- [ ] Comm and widget lifetime.