To do a release follow those steps:
- Update the VERSION file with the newest number.
- Update the flatpak release notes in the flatpak xml file.
- Update the flatpak json version file.
- Do a Github release/tagging of the code. You can copy-paste the release notes you wrote in the flatpak file to Github. Any code available on MASTER branch should be released.
- Now go to adriconf Flathub repository and update the release notes and json files to use the release you just made on Github.
- Commit the changes and wait for Flathub bot to build the new version.
After doing a release Flathub usually takes some hours to publish the version.