Proper Changelog

[MixColumns]

Currently the changelog here https://github.com/astarub/campus_app/releases only has a few items. For a full "changelog" there is a reference to the commits being included in the latest release. This is however not a changelog as it is not clear if another commit might overwrite any changes and commit messages are not always verbouse enough. Additionally not everyone is familiar enough with git - normal users might just want to check out the full patch notes.

There should be a documented policy for the changelog and all important changes should be included in the actual changelog. From going through the commits there seem to be many changes that are not included in the text.

[domai-tb]

Currently we do not have any changelog at all. We will discuss this is next meetings.