Incompatible changes: * every step based on sqlalchemy return value is now dict, where keys are column names got from the database. In case of write operations rowcount is returned.
3.7.0
New * Marketo step.
3.6.0
New * Airflow step.
3.5.0
New * Email send/receive step.
3.4.0
New * Prepare - expect step. Supported in all subclasses of `SqlAlchemyDb`