Handling translation with series plugin.

[athoune]

See #41

[justinmayer]

Hi Mathieu. There is no need to manually increment the version in pyproject.toml, as this will automatically be handled by AutoPub. Would you please revert that change?

Also, as noted in the relevant documentation, please add a RELEASE.md file following the format documented within, which will trigger AutoPub upon merge and issue the release.

Last but not least, I fixed some things in main and merged those changes here in this PR branch.

[athoune]

Version commit has been removed in a rebase.

[athoune]

Ok, the doc is here : https://docs.getpelican.com/en/latest/contribute.html#using-git-and-github

RELEASE.md file added.

[justinmayer]

Thank you, Mathieu. The rebase appears to have caused my commit in upstream main to also appear in this PR branch, which might have happened because you used your fork's main branch instead of creating a separate branch for this PR. Can you see if you can squash everything down to a single commit?