2.1更新内容：
Many new features and changes, including:
- Muzei header
- Album art header and music controls header style (Plus only)
- Long press on header to change image or style
- Single-app cards now display their name next to the icon
- Search bar is now the default header style (color options for Plus users)
- Faster loading
- Drawer color options for all users
- Backup and restore
- New widget loading API
- Tweaks and bug fixes
直达链接：SF Launcher 2 2.1