code: def move_todo_item(self, item_id, to):
          
          path = '/todos/move_item/%u' % item_id
          req = ET.Element('request')
          ET.SubElement(req, 'to').text = str(int(to))
          return self._request(path, req)
docs: Changes the position of an item within its parent list. It does not
          currently support reparenting an item. Position 1 is at the top of the
          list. Moving an item beyond the end of the list puts it at the bottom
          of the list.