* Freeze release workflow
- Do not pull anything from master
- Do not push release commit to master
- Only push created version tag
* Refine scripts to start new version
1. Cherry-pick hotfixes from released version
2. Bump version to new version
Normally, 1 is only made of the release commit updating CHANGELOG
with the release date.
However, if a release branch was needed to apply hotfixes to the
latest release, cherry picking will account for the whole release
branch (i.e. multiple commits).
* Ignore more paths for unit testing