Jupytext

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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))

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**Changed**
- This version comes with a build requirement `jupyterlab>=3,<4`, as the Jupyterlab
extension for Jupytext is not compatible with JupyterLab 4 yet ([1054](https://github.com/mwouts/jupytext/issues/1054))
- The JupyterLab extension was released to `npm` in version 1.3.9.

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**Added**
- Added Stata as a supported language ([1027](https://github.com/mwouts/jupytext/pull/1027)) - thanks to [Raffaele Mancuso](https://github.com/raffaem) for this contribution
- Added SAS as a supported language ([1047](https://github.com/mwouts/jupytext/pull/1047)) - thanks to [lawrencet149](https://github.com/lawrencet149) for this contribution
- We have added a series of test to make sure that the main formats support cell tags ([1024](https://github.com/mwouts/jupytext/issues/1024))

**Fixed**
- When a metadata key is not a valid identifier, a warning is emitted and the metadata is not saved to the text representation ([1042](https://github.com/mwouts/jupytext/issues/1042))
- The CI was fixed by [Matthew Feickert](https://github.com/matthewfeickert) ([#1035](https://github.com/mwouts/jupytext/pull/1035))
- We now use `concurrency` to cancel previous runs on the same branch/PR ([1037](https://github.com/mwouts/jupytext/issues/1037))
- We use both `codecov.notify.after_n_builds` and `comment.after_n_builds` to get only the final codecov comment

**Changed**
- Empty tags are not exported to the text notebook anymore ([960](https://github.com/mwouts/jupytext/issues/960))
- We updated the `yarn.lock` file for the jupyter lab extension to address security vulnerabilities ([1030](https://github.com/mwouts/jupytext/issues/1030), [#1036](https://github.com/mwouts/jupytext/issues/1036))
- In the pre-commit tests we now use `main` for the main branch

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**Added**
- Added Wolfram Language as a supported language ([1014](https://github.com/mwouts/jupytext/issues/1014)) - thanks to [Etienne Dechamps](https://github.com/dechamps) for this contribution