版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/psd.js/3.4.0/psd.js
- https://cdn.bootcdn.net/ajax/libs/psd.js/3.4.0/psd.js.map
- https://cdn.bootcdn.net/ajax/libs/psd.js/3.4.0/psd.min.js
A general purpose Photoshop file parser.