Ipykernel

([Full Changelog](https://github.com/ipython/ipykernel/compare/v6.12.0...3a04ea3fa50d01bcc09f10e3de8bb5570c2cd619))

Maintenance and upkeep improvements

- Clean up test deps and test setup [904](https://github.com/ipython/ipykernel/pull/904) ([blink1073](https://github.com/blink1073))

Contributors to this release

([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2022-04-04&to=2022-04-04&type=c))

[blink1073](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Ablink1073+updated%3A2022-04-04..2022-04-04&type=Issues)

([Full Changelog](https://github.com/ipython/ipykernel/compare/v6.11.0...70073edbdae17be396093be96bf880da069e7e52))

Enhancements made

- use packaging instead of pkg_resources to parse versions [900](https://github.com/ipython/ipykernel/pull/900) ([minrk](https://github.com/minrk))

Bugs fixed

- Make cell_id optional [902](https://github.com/ipython/ipykernel/pull/902) ([blink1073](https://github.com/blink1073))
- Do not try to send on iostream if closed [899](https://github.com/ipython/ipykernel/pull/899) ([blink1073](https://github.com/blink1073))

Contributors to this release

([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2022-03-31&to=2022-04-04&type=c))

[blink1073](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Ablink1073+updated%3A2022-03-31..2022-04-04&type=Issues) | [bollwyvl](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Abollwyvl+updated%3A2022-03-31..2022-04-04&type=Issues) | [minrk](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aminrk+updated%3A2022-03-31..2022-04-04&type=Issues)

([Full Changelog](https://github.com/ipython/ipykernel/compare/v6.10.0...d8520c1c68e0e1c401ecc36e962cf369366c3707))

Enhancements made

- Include method signatures in experimental completion results [895](https://github.com/ipython/ipykernel/pull/895) ([MrBago](https://github.com/MrBago))
- Try to pass cell id to executing kernel. [886](https://github.com/ipython/ipykernel/pull/886) ([Carreau](https://github.com/Carreau))

Maintenance and upkeep improvements

- Handle warnings in tests [896](https://github.com/ipython/ipykernel/pull/896) ([blink1073](https://github.com/blink1073))
- Run flake and remove deprecated import [894](https://github.com/ipython/ipykernel/pull/894) ([blink1073](https://github.com/blink1073))
- Add ignore-revs file [893](https://github.com/ipython/ipykernel/pull/893) ([blink1073](https://github.com/blink1073))
- Autoformat with black and isort [892](https://github.com/ipython/ipykernel/pull/892) ([blink1073](https://github.com/blink1073))
- Add pytest opts and pre-commit [889](https://github.com/ipython/ipykernel/pull/889) ([blink1073](https://github.com/blink1073))

Contributors to this release

([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2022-03-28&to=2022-03-31&type=c))

[blink1073](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Ablink1073+updated%3A2022-03-28..2022-03-31&type=Issues) | [Carreau](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ACarreau+updated%3A2022-03-28..2022-03-31&type=Issues) | [MrBago](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3AMrBago+updated%3A2022-03-28..2022-03-31&type=Issues) | [SylvainCorlay](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ASylvainCorlay+updated%3A2022-03-28..2022-03-31&type=Issues)

([Full Changelog](https://github.com/ipython/ipykernel/compare/v6.9.2...3059fd97b7ccbd72e778f123bfb0ad92e7d9e9c8))

Enhancements made

- Improve performance of stderr and stdout stream buffer [888](https://github.com/ipython/ipykernel/pull/888) ([MrBago](https://github.com/MrBago))

Bugs fixed

- Check if the current thread is the io thread [884](https://github.com/ipython/ipykernel/pull/884) ([jamadeo](https://github.com/jamadeo))

Maintenance and upkeep improvements

- More CI cleanup [887](https://github.com/ipython/ipykernel/pull/887) ([blink1073](https://github.com/blink1073))
- CI cleanup [885](https://github.com/ipython/ipykernel/pull/885) ([blink1073](https://github.com/blink1073))

Documentation improvements

- Add precision about subprocess stdout/stderr capturing [883](https://github.com/ipython/ipykernel/pull/883) ([lesteve](https://github.com/lesteve))

Contributors to this release

([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2022-03-14&to=2022-03-28&type=c))

[blink1073](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Ablink1073+updated%3A2022-03-14..2022-03-28&type=Issues) | [jamadeo](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Ajamadeo+updated%3A2022-03-14..2022-03-28&type=Issues) | [lesteve](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Alesteve+updated%3A2022-03-14..2022-03-28&type=Issues) | [MrBago](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3AMrBago+updated%3A2022-03-14..2022-03-28&type=Issues) | [SylvainCorlay](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ASylvainCorlay+updated%3A2022-03-14..2022-03-28&type=Issues)

([Full Changelog](https://github.com/ipython/ipykernel/compare/v6.9.1...d6744f9e423dacc6b317b1d31805304e89cbec5d))

Bugs fixed

- Catch error when shutting down kernel from the control channel [877](https://github.com/ipython/ipykernel/pull/877) ([ccordoba12](https://github.com/ccordoba12))
- Only kill children in process group at shutdown [874](https://github.com/ipython/ipykernel/pull/874) ([minrk](https://github.com/minrk))
- BUG: Kill subprocesses on shutdown. [869](https://github.com/ipython/ipykernel/pull/869) ([Carreau](https://github.com/Carreau))

Maintenance and upkeep improvements

- Clean up CI [871](https://github.com/ipython/ipykernel/pull/871) ([blink1073](https://github.com/blink1073))

Contributors to this release

([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2022-02-15&to=2022-03-14&type=c))

[blink1073](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Ablink1073+updated%3A2022-02-15..2022-03-14&type=Issues) | [Carreau](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3ACarreau+updated%3A2022-02-15..2022-03-14&type=Issues) | [ccordoba12](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Accordoba12+updated%3A2022-02-15..2022-03-14&type=Issues) | [echarles](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aecharles+updated%3A2022-02-15..2022-03-14&type=Issues) | [fabioz](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Afabioz+updated%3A2022-02-15..2022-03-14&type=Issues) | [minrk](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aminrk+updated%3A2022-02-15..2022-03-14&type=Issues) | [vidartf](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Avidartf+updated%3A2022-02-15..2022-03-14&type=Issues)

([Full Changelog](https://github.com/ipython/ipykernel/compare/v6.9.0...c27e5b95c3d104d9fb6cae3375aec0e98974dcff))

Bugs fixed

- Add hostname to the usage reply [865](https://github.com/ipython/ipykernel/pull/865) ([echarles](https://github.com/echarles))
- Enable standard library debugging via config [863](https://github.com/ipython/ipykernel/pull/863) ([echarles](https://github.com/echarles))
- process_one only accepts coroutines for dispatch [861](https://github.com/ipython/ipykernel/pull/861) ([minrk](https://github.com/minrk))

Contributors to this release

([GitHub contributors page for this release](https://github.com/ipython/ipykernel/graphs/contributors?from=2022-02-07&to=2022-02-15&type=c))

[blink1073](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Ablink1073+updated%3A2022-02-07..2022-02-15&type=Issues) | [echarles](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aecharles+updated%3A2022-02-07..2022-02-15&type=Issues) | [minrk](https://github.com/search?q=repo%3Aipython%2Fipykernel+involves%3Aminrk+updated%3A2022-02-07..2022-02-15&type=Issues)