Significant OpenAPI Updates

尊敬的开发者，

请留意以下变动：

为提升V2.0授权流程用户体验，减少开发者因技术故障无法获取到token给卖家带来的影响，我们新增resent code的授权流程，允许开发者通过登陆开发者账号重新发送店铺授权需要的code，新增接口get_token_by_resend_code 获取refresh_token和access_token。

详细可查看此 FAQ。

Dear Developer,

Please find below updates:

In order to improve the user experience of the V2.0 authorization process and reduce the impact on sellers caused by the developer's inability to obtain tokens due to technical failures, we have added a resent code authorization process to allow developers to resend the code by logging in the developer account, we also add a new api get_token_by_resend_code to allow developer to get refresh_token and access_token by resend_code.

Please check this FAQ for details.