See: https://core.telegram.org/bots/api#promotechatmember

def promoteChatMember(self, chat_id, user_id,
                          can_change_info=None,
                          can_post_messages=None,
                          can_edit_messages=None,
                          can_delete_messages=None,
                          can_invite_users=None,
                          can_restrict_members=None,
                          can_pin_messages=None,
                          can_promote_members=None):
        """ See: https://core.telegram.org/bots/api#promotechatmember """
        p = _strip(locals())
        return self._api_request('promoteChatMember', _rectify(p))