def update_version(db_settings, params):
    """
    Update the database when a Toyz version changes (if necessary). At the time params
    is a dictionary that requires the keys 'toyz_version' and 'db_version', the versions
    of the Toyz instance and database respectively. In the future, updates to the DB may
    require other parameters.
    """
    toyz_version = params['toyz_version']
    db_version = params['db_version']
    print('No updates needed')
