([full changelog](https://github.com/jupyterlab/retrolab/compare/0.3.0a2...574da61aa7c8cc4aa6840b0e548860f7ceeb11dc))
Maintenance and upkeep improvements
- Update to JupyterLab 3.1.0-beta.0 packages [167](https://github.com/jupyterlab/retrolab/pull/167) ([jtpio](https://github.com/jtpio))
Other merged PRs
- Check the application status before closing the tab [166](https://github.com/jupyterlab/retrolab/pull/166) ([jtpio](https://github.com/jtpio))
- Backport PR 159 on branch 0.2.x (Mimic classic notebook behavior for /tree/<path>) [161](https://github.com/jupyterlab/retrolab/pull/161) ([meeseeksmachine](https://github.com/meeseeksmachine))
- Mimic classic notebook behavior for /tree/<path> [159](https://github.com/jupyterlab/retrolab/pull/159) ([yuvipanda](https://github.com/yuvipanda))
- [0.2.x] Backport 148 (Enable hub-extension) [151](https://github.com/jupyterlab/retrolab/pull/151) ([jtpio](https://github.com/jtpio))
- Backport PR 138 on branch 0.2.x (Easier to access RetroLab tree) [150](https://github.com/jupyterlab/retrolab/pull/150) ([meeseeksmachine](https://github.com/meeseeksmachine))
- Enable hub-extension [148](https://github.com/jupyterlab/retrolab/pull/148) ([jabbera](https://github.com/jabbera))
- Backport PR 144 on branch 0.2.x (Trigger CI on all branches for `push` events) [145](https://github.com/jupyterlab/retrolab/pull/145) ([meeseeksmachine](https://github.com/meeseeksmachine))
- Trigger CI on all branches for `push` events [144](https://github.com/jupyterlab/retrolab/pull/144) ([jtpio](https://github.com/jtpio))
- Backport PR 137 on branch 0.2.x (Follow-up to the move to the `jupyterlab` organization) [142](https://github.com/jupyterlab/retrolab/pull/142) ([meeseeksmachine](https://github.com/meeseeksmachine))
- Backport PR 140 on branch 0.2.x (Fix release workflow) [141](https://github.com/jupyterlab/retrolab/pull/141) ([meeseeksmachine](https://github.com/meeseeksmachine))
- Fix release workflow [140](https://github.com/jupyterlab/retrolab/pull/140) ([jtpio](https://github.com/jtpio))
Contributors to this release
([GitHub contributors page for this release](https://github.com/jupyterlab/retrolab/graphs/contributors?from=2021-05-28&to=2021-07-06&type=c))
[fcollonval](https://github.com/search?q=repo%3Ajupyterlab%2Fretrolab+involves%3Afcollonval+updated%3A2021-05-28..2021-07-06&type=Issues) | [github-actions](https://github.com/search?q=repo%3Ajupyterlab%2Fretrolab+involves%3Agithub-actions+updated%3A2021-05-28..2021-07-06&type=Issues) | [jabbera](https://github.com/search?q=repo%3Ajupyterlab%2Fretrolab+involves%3Ajabbera+updated%3A2021-05-28..2021-07-06&type=Issues) | [jtpio](https://github.com/search?q=repo%3Ajupyterlab%2Fretrolab+involves%3Ajtpio+updated%3A2021-05-28..2021-07-06&type=Issues) | [meeseeksmachine](https://github.com/search?q=repo%3Ajupyterlab%2Fretrolab+involves%3Ameeseeksmachine+updated%3A2021-05-28..2021-07-06&type=Issues) | [welcome](https://github.com/search?q=repo%3Ajupyterlab%2Fretrolab+involves%3Awelcome+updated%3A2021-05-28..2021-07-06&type=Issues) | [yuvipanda](https://github.com/search?q=repo%3Ajupyterlab%2Fretrolab+involves%3Ayuvipanda+updated%3A2021-05-28..2021-07-06&type=Issues)