@Fokko @jakahn I feel like this PR should be presented as an [Airflow Improvement Proposal](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals), given the changes being introduced to `models.py`. It should be easy to do, as there is a [design doc](https://docs.google.com/document/d/1qaucGw52aoR96swHQqIYN9nQXn2QKSOWvw6-KyI6Wwc/edit) already.
BTW @jakahn try rebasing your branch now. It's broken at this moment. [ Full content available at: https://github.com/apache/incubator-airflow/pull/3805 ] This message was relayed via gitbox.apache.org for [email protected]
