Release 0.3.0-beta

see #346 (closed) as reference

Preparation

• String freeze (disable auto-pull) and announcement on Transifex at least a week before the release
• Update translations, potentially adding new languages to UnencryptedSettings.kt (!246 (merged))
• Extensive testing
• Update changelog

Version bump

• Change version in build config and metainfo.xml (!247 (merged))
• Tag in Git (use git tag -a -s <version-name>-beta -m "Briar Desktop <version-name>-beta") (https://code.briarproject.org/briar/briar-desktop/-/tags/0.3.0-beta)
• GitLab CI builds release files automatically (https://code.briarproject.org/briar/briar-desktop/-/pipelines/12278)

Deployment

• Copy release files to desktop.briarproject.org (using update-binaries.sh with updated version code)
• Rewrite and check that permalink points to correct version (don't forget to test and reload web server)
• Update version and checksums (calculated using verify_hashsums.sh) on website (website!98 (merged))
• Publish website

PR

• Inform 3rd party maintainers about release
• Post on social media (Mastodon, Twitter), useful character counter
• Update screenshot on website

Backlog

• Update description, milestone and due date of #337
• Re-enable auto-pull on Transifex under Resources > Auto update resources > add url => postponed via #403 (closed)