v2.1.2

修复

1. URL解码器将空格解码成加号的BUG。
2. 获取不到状态码说明时出错的BUG，现在找不到时将默认返回NULL。
3. 更新 micropython-easynetwork

• 该BUG会影响到GET请求的参数解析，建议尽快更新。

Bug Fixes

1. Fixed a bug where the URL decoder decoded spaces as plus signs.
2. Fixed a bug where an error occurred when unable to retrieve the status code description; it now defaults to NULL when not found.
3. Update micropython-easynwork

• This bug could affect parameter parsing for GET requests. It is recommended to update as soon as possible.