([Full Changelog](https://github.com/jupyter-server/jupyter_server/compare/v2.9.1...f23b3392624001c8fba6623e19f526a98b4a07ba))
Enhancements made
- Better error message when starting kernel for session. [1478](https://github.com/jupyter-server/jupyter_server/pull/1478) ([Carreau](https://github.com/Carreau))
- Add a traitlet to disable recording HTTP request metrics [1472](https://github.com/jupyter-server/jupyter_server/pull/1472) ([yuvipanda](https://github.com/yuvipanda))
- prometheus: Expose 3 activity metrics [1471](https://github.com/jupyter-server/jupyter_server/pull/1471) ([yuvipanda](https://github.com/yuvipanda))
- Add prometheus info metrics listing server extensions + versions [1470](https://github.com/jupyter-server/jupyter_server/pull/1470) ([yuvipanda](https://github.com/yuvipanda))
- Add prometheus metric with version information [1467](https://github.com/jupyter-server/jupyter_server/pull/1467) ([yuvipanda](https://github.com/yuvipanda))
- Better hash format error message [1442](https://github.com/jupyter-server/jupyter_server/pull/1442) ([fcollonval](https://github.com/fcollonval))
- Removing excessive logging from reading local files [1420](https://github.com/jupyter-server/jupyter_server/pull/1420) ([lresende](https://github.com/lresende))
- Do not include token in dashboard link, when available [1406](https://github.com/jupyter-server/jupyter_server/pull/1406) ([minrk](https://github.com/minrk))
- Add an option to have authentication enabled for all endpoints by default [1392](https://github.com/jupyter-server/jupyter_server/pull/1392) ([krassowski](https://github.com/krassowski))
- websockets: add configurations for ping interval and timeout [1391](https://github.com/jupyter-server/jupyter_server/pull/1391) ([oliver-sanders](https://github.com/oliver-sanders))
- log extension import time at debug level unless it's actually slow [1375](https://github.com/jupyter-server/jupyter_server/pull/1375) ([minrk](https://github.com/minrk))
- Add support for async Authorizers (part 2) [1374](https://github.com/jupyter-server/jupyter_server/pull/1374) ([Zsailer](https://github.com/Zsailer))
- Support async Authorizers [1373](https://github.com/jupyter-server/jupyter_server/pull/1373) ([Zsailer](https://github.com/Zsailer))
- Support get file(notebook) md5 [1363](https://github.com/jupyter-server/jupyter_server/pull/1363) ([Wh1isper](https://github.com/Wh1isper))
- Update kernel env to reflect changes in session [1354](https://github.com/jupyter-server/jupyter_server/pull/1354) ([blink1073](https://github.com/blink1073))
Bugs fixed
- Return HTTP 400 when attempting to post an event with an unregistered schema [1463](https://github.com/jupyter-server/jupyter_server/pull/1463) ([afshin](https://github.com/afshin))
- write server extension list to stdout [1451](https://github.com/jupyter-server/jupyter_server/pull/1451) ([minrk](https://github.com/minrk))
- don't let ExtensionApp jpserver_extensions be overridden by config [1447](https://github.com/jupyter-server/jupyter_server/pull/1447) ([minrk](https://github.com/minrk))
- Pass session_id during Websocket connect [1440](https://github.com/jupyter-server/jupyter_server/pull/1440) ([gogasca](https://github.com/gogasca))
- Do not log environment variables passed to kernels [1437](https://github.com/jupyter-server/jupyter_server/pull/1437) ([krassowski](https://github.com/krassowski))
- extensions: render default templates with default static_url [1435](https://github.com/jupyter-server/jupyter_server/pull/1435) ([minrk](https://github.com/minrk))
- Improve the busy/idle execution state tracking for kernels. [1429](https://github.com/jupyter-server/jupyter_server/pull/1429) ([ojarjur](https://github.com/ojarjur))
- Ignore zero-length page_config.json, restore previous behavior of crashing for invalid JSON [1405](https://github.com/jupyter-server/jupyter_server/pull/1405) ([holzman](https://github.com/holzman))
- Don't crash on invalid JSON in page_config (1403) [1404](https://github.com/jupyter-server/jupyter_server/pull/1404) ([holzman](https://github.com/holzman))
- Fix color in windows log console with colorama [1397](https://github.com/jupyter-server/jupyter_server/pull/1397) ([hansepac](https://github.com/hansepac))
- Fix log arguments for gateway client error [1385](https://github.com/jupyter-server/jupyter_server/pull/1385) ([minrk](https://github.com/minrk))
- Import User unconditionally [1384](https://github.com/jupyter-server/jupyter_server/pull/1384) ([yuvipanda](https://github.com/yuvipanda))
- Fix a typo in error message [1381](https://github.com/jupyter-server/jupyter_server/pull/1381) ([krassowski](https://github.com/krassowski))
- avoid unhandled error on some invalid paths [1369](https://github.com/jupyter-server/jupyter_server/pull/1369) ([minrk](https://github.com/minrk))
- Change md5 to hash and hash_algorithm, fix incompatibility [1367](https://github.com/jupyter-server/jupyter_server/pull/1367) ([Wh1isper](https://github.com/Wh1isper))
- ContentsHandler return 404 rather than raise exc [1357](https://github.com/jupyter-server/jupyter_server/pull/1357) ([bloomsa](https://github.com/bloomsa))
- Force legacy ws subprotocol when using gateway [1311](https://github.com/jupyter-server/jupyter_server/pull/1311) ([epignot](https://github.com/epignot))
Maintenance and upkeep improvements
- Donation link NF -> LF [1485](https://github.com/jupyter-server/jupyter_server/pull/1485) ([Carreau](https://github.com/Carreau))
- Handle newer jupyter_events wants string version, drop 3.8 [1481](https://github.com/jupyter-server/jupyter_server/pull/1481) ([Carreau](https://github.com/Carreau))
- Ignore unclosed sqlite connection in traits [1477](https://github.com/jupyter-server/jupyter_server/pull/1477) ([cjwatson](https://github.com/cjwatson))
- chore: update pre-commit hooks [1441](https://github.com/jupyter-server/jupyter_server/pull/1441) ([pre-commit-ci](https://github.com/pre-commit-ci))
- chore: update pre-commit hooks [1427](https://github.com/jupyter-server/jupyter_server/pull/1427) ([pre-commit-ci](https://github.com/pre-commit-ci))
- Use hatch fmt command [1424](https://github.com/jupyter-server/jupyter_server/pull/1424) ([blink1073](https://github.com/blink1073))
- chore: update pre-commit hooks [1421](https://github.com/jupyter-server/jupyter_server/pull/1421) ([pre-commit-ci](https://github.com/pre-commit-ci))
- Fix jupytext and lint CI failures [1413](https://github.com/jupyter-server/jupyter_server/pull/1413) ([blink1073](https://github.com/blink1073))
- Set all min deps [1411](https://github.com/jupyter-server/jupyter_server/pull/1411) ([blink1073](https://github.com/blink1073))
- chore: update pre-commit hooks [1409](https://github.com/jupyter-server/jupyter_server/pull/1409) ([pre-commit-ci](https://github.com/pre-commit-ci))
- Update pytest requirement from \<8,>=7.0 to >=7.0,\<9 [1402](https://github.com/jupyter-server/jupyter_server/pull/1402) ([dependabot](https://github.com/dependabot))
- Pin to Pytest 7 [1401](https://github.com/jupyter-server/jupyter_server/pull/1401) ([blink1073](https://github.com/blink1073))
- Update release workflows [1399](https://github.com/jupyter-server/jupyter_server/pull/1399) ([blink1073](https://github.com/blink1073))
- chore: update pre-commit hooks [1390](https://github.com/jupyter-server/jupyter_server/pull/1390) ([pre-commit-ci](https://github.com/pre-commit-ci))
- Improve warning handling [1386](https://github.com/jupyter-server/jupyter_server/pull/1386) ([blink1073](https://github.com/blink1073))
- Simplify the jupytext downstream test [1383](https://github.com/jupyter-server/jupyter_server/pull/1383) ([mwouts](https://github.com/mwouts))
- Fix test param for pytest-xdist [1382](https://github.com/jupyter-server/jupyter_server/pull/1382) ([tornaria](https://github.com/tornaria))
- Update pre-commit deps [1380](https://github.com/jupyter-server/jupyter_server/pull/1380) ([blink1073](https://github.com/blink1073))
- Use ruff docstring-code-format [1377](https://github.com/jupyter-server/jupyter_server/pull/1377) ([blink1073](https://github.com/blink1073))
- Update for tornado 6.4 [1372](https://github.com/jupyter-server/jupyter_server/pull/1372) ([blink1073](https://github.com/blink1073))
- chore: update pre-commit hooks [1370](https://github.com/jupyter-server/jupyter_server/pull/1370) ([pre-commit-ci](https://github.com/pre-commit-ci))
- Update ruff and typings [1365](https://github.com/jupyter-server/jupyter_server/pull/1365) ([blink1073](https://github.com/blink1073))
- Clean up ruff config [1358](https://github.com/jupyter-server/jupyter_server/pull/1358) ([blink1073](https://github.com/blink1073))
- Add more typings [1356](https://github.com/jupyter-server/jupyter_server/pull/1356) ([blink1073](https://github.com/blink1073))
- chore: update pre-commit hooks [1355](https://github.com/jupyter-server/jupyter_server/pull/1355) ([pre-commit-ci](https://github.com/pre-commit-ci))
- Clean up config and address warnings [1353](https://github.com/jupyter-server/jupyter_server/pull/1353) ([blink1073](https://github.com/blink1073))
- Clean up lint and typing [1351](https://github.com/jupyter-server/jupyter_server/pull/1351) ([blink1073](https://github.com/blink1073))
- Update typing for traitlets 5.13 [1350](https://github.com/jupyter-server/jupyter_server/pull/1350) ([blink1073](https://github.com/blink1073))
- Update typings and fix tests [1344](https://github.com/jupyter-server/jupyter_server/pull/1344) ([blink1073](https://github.com/blink1073))
Documentation improvements
- add comments to explain signal handling under jupyterhub [1452](https://github.com/jupyter-server/jupyter_server/pull/1452) ([oliver-sanders](https://github.com/oliver-sanders))
- Update documentation for `cookie_secret` [1433](https://github.com/jupyter-server/jupyter_server/pull/1433) ([krassowski](https://github.com/krassowski))
- Add Changelog for 2.14.1 [1430](https://github.com/jupyter-server/jupyter_server/pull/1430) ([blink1073](https://github.com/blink1073))
- Update simple extension examples: \_jupyter_server_extension_points [1426](https://github.com/jupyter-server/jupyter_server/pull/1426) ([manics](https://github.com/manics))
- Link to GitHub repo from the docs [1415](https://github.com/jupyter-server/jupyter_server/pull/1415) ([krassowski](https://github.com/krassowski))
- docs: list server extensions [1412](https://github.com/jupyter-server/jupyter_server/pull/1412) ([oliver-sanders](https://github.com/oliver-sanders))
- Update simple extension README to cd into correct subdirectory [1410](https://github.com/jupyter-server/jupyter_server/pull/1410) ([markypizz](https://github.com/markypizz))
- Add deprecation note for `ServerApp.preferred_dir` [1396](https://github.com/jupyter-server/jupyter_server/pull/1396) ([krassowski](https://github.com/krassowski))
- Replace \_jupyter_server_extension_paths in apidocs [1393](https://github.com/jupyter-server/jupyter_server/pull/1393) ([manics](https://github.com/manics))
- fix "Shutdown" -> "Shut down" [1389](https://github.com/jupyter-server/jupyter_server/pull/1389) ([Timeroot](https://github.com/Timeroot))
- Enable htmlzip and epub on readthedocs [1379](https://github.com/jupyter-server/jupyter_server/pull/1379) ([bollwyvl](https://github.com/bollwyvl))
- Update api docs with md5 param [1364](https://github.com/jupyter-server/jupyter_server/pull/1364) ([Wh1isper](https://github.com/Wh1isper))
- typo: ServerApp [1361](https://github.com/jupyter-server/jupyter_server/pull/1361) ([IITII](https://github.com/IITII))
Contributors to this release
([GitHub contributors page for this release](https://github.com/jupyter-server/jupyter_server/graphs/contributors?from=2023-10-25&to=2024-12-20&type=c))
[afshin](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aafshin+updated%3A2023-10-25..2024-12-20&type=Issues) | [blink1073](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Ablink1073+updated%3A2023-10-25..2024-12-20&type=Issues) | [bloomsa](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Abloomsa+updated%3A2023-10-25..2024-12-20&type=Issues) | [bollwyvl](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Abollwyvl+updated%3A2023-10-25..2024-12-20&type=Issues) | [Carreau](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3ACarreau+updated%3A2023-10-25..2024-12-20&type=Issues) | [cjwatson](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Acjwatson+updated%3A2023-10-25..2024-12-20&type=Issues) | [davidbrochart](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Adavidbrochart+updated%3A2023-10-25..2024-12-20&type=Issues) | [dependabot](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Adependabot+updated%3A2023-10-25..2024-12-20&type=Issues) | [epignot](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aepignot+updated%3A2023-10-25..2024-12-20&type=Issues) | [fcollonval](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Afcollonval+updated%3A2023-10-25..2024-12-20&type=Issues) | [gogasca](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Agogasca+updated%3A2023-10-25..2024-12-20&type=Issues) | [hansepac](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Ahansepac+updated%3A2023-10-25..2024-12-20&type=Issues) | [holzman](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aholzman+updated%3A2023-10-25..2024-12-20&type=Issues) | [IITII](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3AIITII+updated%3A2023-10-25..2024-12-20&type=Issues) | [krassowski](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Akrassowski+updated%3A2023-10-25..2024-12-20&type=Issues) | [lresende](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Alresende+updated%3A2023-10-25..2024-12-20&type=Issues) | [manics](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Amanics+updated%3A2023-10-25..2024-12-20&type=Issues) | [markypizz](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Amarkypizz+updated%3A2023-10-25..2024-12-20&type=Issues) | [minrk](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aminrk+updated%3A2023-10-25..2024-12-20&type=Issues) | [mwouts](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Amwouts+updated%3A2023-10-25..2024-12-20&type=Issues) | [ojarjur](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aojarjur+updated%3A2023-10-25..2024-12-20&type=Issues) | [oliver-sanders](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Aoliver-sanders+updated%3A2023-10-25..2024-12-20&type=Issues) | [pre-commit-ci](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Apre-commit-ci+updated%3A2023-10-25..2024-12-20&type=Issues) | [Timeroot](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3ATimeroot+updated%3A2023-10-25..2024-12-20&type=Issues) | [tornaria](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Atornaria+updated%3A2023-10-25..2024-12-20&type=Issues) | [welcome](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Awelcome+updated%3A2023-10-25..2024-12-20&type=Issues) | [Wh1isper](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3AWh1isper+updated%3A2023-10-25..2024-12-20&type=Issues) | [yuvipanda](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3Ayuvipanda+updated%3A2023-10-25..2024-12-20&type=Issues) | [Zsailer](https://github.com/search?q=repo%3Ajupyter-server%2Fjupyter_server+involves%3AZsailer+updated%3A2023-10-25..2024-12-20&type=Issues)
<!-- <END NEW CHANGELOG ENTRY> -->