Jupytext

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**Changed**
- The CI has been updated. Thanks to [Christian Le](https://github.com/LecrisUT) for taking care of this! ([#1190](https://github.com/mwouts/jupytext/issues/1190), [#1204](https://github.com/mwouts/jupytext/issues/1204))

**Fixed**
- Fixed an issue about unpairing notebooks from the Jupytext Menu ([1197](https://github.com/mwouts/jupytext/issues/1197))
- JupyterLab's dependency `follow-redirects` was updated from 1.15.3 to 1.15.4 ([1203](https://github.com/mwouts/jupytext/issues/1203))

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**Added**
- The Jupytext Menu is back! And text notebooks can be created directly from the launcher. This is an outstanding contribution by [Mahendra Paipuri](https://github.com/mahendrapaipuri) ([#1154](https://github.com/mwouts/jupytext/issues/1154), [#1163](https://github.com/mwouts/jupytext/issues/1163)). This requires JupyterLab 4.x or Jupyter Notebook 7.x.

**Changed**
- Jupytext is now configured with `pyproject.toml` and built with `hatch`. The layout has been reorganised to follow `src-layout` ([1140](https://github.com/mwouts/jupytext/issues/1140)). This is another outstanding contribution by [Mahendra Paipuri](https://github.com/mahendrapaipuri).
- The tests are now part of the `sdist`. They have been reorganized into unit/functional/integration/external ([1167](https://github.com/mwouts/jupytext/issues/1167), [#1173](https://github.com/mwouts/jupytext/issues/1173)).
- The legacy extension for Jupyter Notebook <=6 (the Jupytext Menu) has been removed.

**Fixed**
- The bibliography section in Rmd files does not become a code cell anymore ([1161](https://github.com/mwouts/jupytext/issues/1161))
- Commented code in `active-py` cells is not uncommented anymore ([1131](https://github.com/mwouts/jupytext/issues/1131))
- The test coverage has been restored ([1167](https://github.com/mwouts/jupytext/issues/1167), [#1173](https://github.com/mwouts/jupytext/issues/1173))
- We test Jupytext against the pre-release version of JupyterLab, and other dependencies ([1168](https://github.com/mwouts/jupytext/issues/1168))

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**Added**
- The Jupyter Lab extension is now compatible with the [JupyterLab RISE](https://github.com/jupyterlab-contrib/rise) extension. Many thanks to [Frédéric Collonval](https://github.com/fcollonval) for his PR ([#1126](https://github.com/mwouts/jupytext/pull/1126))!

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**Added**
- We have added a new command line interface `jupytext-config` that you can use to set Jupytext as the default viewer for text notebooks in Jupyter Lab and Jupyter Notebook 7. Thanks to [Thierry Parmentelat](https://github.com/parmentelat) for this contribution! ([#1094](https://github.com/mwouts/jupytext/pull/1094))

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**Changed**
- This version comes with a version of the JupyterLab extension that is compatible with JupyterLab 4.x. Many thanks to [Thierry Parmentelat](https://github.com/parmentelat) for his PRs! ([#1092](https://github.com/mwouts/jupytext/pull/1092), [#1109](https://github.com/mwouts/jupytext/pull/1109))
- Pandoc 3.0 is now supported, thanks to [Raniere Silva](https://github.com/rgaiacs) for his PR ([#1099](https://github.com/mwouts/jupytext/pull/1099))
- We have reorganized the documentation and the README.md ([1031](https://github.com/mwouts/jupytext/issues/1031), [#1073](https://github.com/mwouts/jupytext/issues/1073))
- Invalid `pyproject.toml` files will be ignored by Jupytext in Jupyter ([1103](https://github.com/mwouts/jupytext/issues/1103))
- We have updated the pre-commit tools

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**Changed**
- We have updated the GitHub workflows - thanks to Matthew Feickert and to Cristian Le for their help on this subject ([1037](https://github.com/mwouts/jupytext/issues/1037))
- We have removed the upper bound on `markdown-it-py<3`. Now we test Jupytext with `markdown-it-py` in versions `2.x` and `3.x` on the CI ([1075](https://github.com/mwouts/jupytext/issues/1075))

**Fixed**
- Notebooks with an empty YAML header work ([1070](https://github.com/mwouts/jupytext/issues/1070))
- Double quote strings in R Markdown options can contain single quotes ([1079](https://github.com/mwouts/jupytext/issues/1079))
- The necessary directories are created when paired notebooks are moved to a sub-folder ([1059](https://github.com/mwouts/jupytext/issues/1059))
- Commented quotes are recognized as such ([1060](https://github.com/mwouts/jupytext/issues/1060))
- Jupytext can use either `pkg_resources` or `packaging` to parse version numbers ([1085](https://github.com/mwouts/jupytext/issues/1085))