text: Title: AttributeError: 'Bot' object has no attribute 'enable_puid'
  Body: 现在是没有enable_puid这个方法了？
  ```
  raceback (most recent call last):
    File "C:/Users/Administrator/PycharmProjects/example/weixin/1.py", line 7, in <module>
      bot.enable_puid('wxpy_puid.pkl')
  AttributeError: 'Bot' object has no attribute 'enable_puid'
  ```
  
  我的代码是
  ```
  # -*- coding:utf-8 -*-
  from wxpy import *
  # 初始化机器人，扫码登陆
  bot = Bot(cache_path=True)
  
  
  # 启用 puid 属性，并指定 puid 所需的映射数据保存/载入路径
  bot.enable_puid('wxpy_puid.pkl')
  ```