And another release within one week. This quicker turn around was due to a bug in the activation module that was introduced by a pull request that was not merged prior to release of 0.21.0. So I recommend updating to 0.22.0 as soon as possible. 
This release contains a non-minor change, which fixes the aforementioned issue only as a side effect. 
The main change in this release is the introduction of further centralization, courtesy of @marcel.arentz. 
Thanks buddy! 
The changes are already implemented in some modules, but other still need to be migrated. If that sounds like a job for you, head over to GitHub and dive right in. 