Update mrml to 5.0.0

[mgd020]

Updates:

• mrml@5.0.0
• maturin@1.8.3
• actions/upload-artifact@v4
• actions/download-artifact@v4

Supersedes #35 & #36

[federicobond]

Hi @mgd020! Thank you so much for this library; we have been using it in production for months without any problems.

This is just a heads-up that updating mrml to 5.x was a breaking change for us, and we let our guard down a bit because it was only a patch release in mjml-python. In the future, it may be useful to match the bump in the mrml crate version to better communicate the potential impact of changes.

[mgd020]

This is just a heads-up that updating mrml to 5.x was a breaking change for us, and we let our guard down a bit because it was only a patch release in mjml-python. In the future, it may be useful to match the bump in the mrml crate version to better communicate the potential impact of changes.

I'm sorry to hear that! You are of course right, I should have bumped major.

Can you elaborate on any breaking changes? I would like to document them in the release notes.

[federicobond]

I can't seem to reproduce it now, but it related to ending tag handling. An mj-button inside an mj-wrapper inside an mj-text used to render as a button despite being technically against the spec. The new version now (correctly) outputs the HTML inside the mj-text as is.