The forge ui usually shows the release name right above the description,
so this removes an unecessary duplicate bit of information.
In addition this also cleans up the changelog interface a bit and moves
functionality where it belongs. Prepares a bit for custom changelogs in
the future.
Closes#32
GitLab generates commit messages of the pattern "scope: message\n" if no
body is present. This throws up the conventional commits parser we use,
and results in the error message "missing a blank line".
We now `strings.TrimSpace()` the commit message to avoid this problem.
