版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/svg4everybody/2.1.9/svg4everybody.js
- https://cdn.bootcdn.net/ajax/libs/svg4everybody/2.1.9/svg4everybody.legacy.js
- https://cdn.bootcdn.net/ajax/libs/svg4everybody/2.1.9/svg4everybody.legacy.min.js
- https://cdn.bootcdn.net/ajax/libs/svg4everybody/2.1.9/svg4everybody.min.js