Changes a given `changed_fields` on each object in the queryset, saves objects
        and returns the changed objects in the queryset.

def change_and_save(self, update_only_changed_fields=False, **changed_fields):
        """
        Changes a given `changed_fields` on each object in the queryset, saves objects
        and returns the changed objects in the queryset.
        """
        bulk_change_and_save(self, update_only_changed_fields=update_only_changed_fields, **changed_fields)
        return self.filter()