This file documents any backwards-incompatible changes in Airflow and assists people when migrating to a new version.
Previously, new DAGs would be scheduled immediately. To retain the old behavior, add this to airflow.cfg:
[core]
dags_are_paused_at_creation = False
These features are marked for deprecation. They may still work (and raise a DeprecationWarning), but are no longer supported and will be removed entirely in Airflow 2.0
Previously, Operator.__init__() accepted any arguments (either positional *args or keyword **kwargs) without complaint. Now, invalid arguments will be rejected.