---
upgrade:
  - |
    The following deprecated option aliases have been removed:

    - ``[DEFAULT] sqlite_synchronous`` (use ``[database] sqlite_synchronous``)
    - ``[DEFAULT] db_backend`` (use ``[database] backend``)
    - ``[DEFAULT] sql_connection``, ``[DATABASE] sql_connection``,
      ``[sql] connection`` (use ``[database] connection``)
    - ``[DEFAULT] sql_max_retries``, ``[DATABASE] sql_max_retries``
      (use ``[database] max_retries``)
    - ``[DEFAULT] sql_retry_interval``, ``[DATABASE] reconnect_interval``
      (use ``[database] retry_interval``)
    - ``[DEFAULT] sql_max_overflow``, ``[DATABASE] sqlalchemy_max_overflow``
      (use ``[database] max_overflow``)
    - ``[DEFAULT] sql_connection_debug`` (use ``[database] connection_debug``)
    - ``[DEFAULT] sql_connection_trace`` (use ``[database] connection_trace``)
    - ``[DATABASE] sqlalchemy_pool_timeout`` (use ``[database] pool_timeout``)