Release 0.3.0

[benoit74]

This issue serves as a checklist for the release event.

• Check that dependencies have been updated to latest version
• Adjust version in __about__.py to x.x.x
• Update Github milestone to match the issues that will be released
• Close Github milestone
• Update the Changelog so that it is in line with the content of Github milestone
• Push a tag on Github named vx.x.x
• Create a Github release, pointing to the tag, with the Changelog of this release
• Publish the Github release (this will trigger the CI, if the CI fails and you have to push a minor fix which does not justify to create a new version, you will have to delete the release and re-create it from scratch)
• Check that version is published as a Github release at https://github.com/openzim/hatch-openzim/releases and tagged latest
• Check that version is published on Pypi at https://pypi.org/project/hatch-openzim/
• Create a new Github milestone with the next minor version incrementaly
• Create a new Github issue attached to this milestone with this checklist inside
• Create new ## [Unreleased] section in Changelog (placeholder for future entries)
• Adjust version in __about__.py to `x.y.z-dev0