配置文件:
application/config.php

升级接口:
application/admin/controller/BaseController.php isUpdate
application/admin/view/index_index.html

插件市场:
application/admin/controller/AddonsController.php
application/admin/view/addons_index.html
application/admin/view/addons_shop.html

公众方法:
application/common.php
发送邮件 send_mail
易联云微信打印机 wxPrint
发送短信 sendSms