Release version 7.0.0

Issues and merge requests

• Finished the milestone/targeted issues?
• Relabeled issues with status:wip that are not work in progress?

Code

• Got all pipelines to succeed?
• Made a real-world test among maintainers?
• Updated translations?
• Updated code for 2021 → 2022?

Documentation

• Updated the release-notes file?
• Updated the CHANGELOG.md file?
• Updated the README.md file?
• Updated the manual?

Packaging

• Created an entry in the releases section?
• Uploaded to CTAN?