当我设置连线的时候，提示连线默认关闭，需要在连线设置中打开，连线设置在哪里啊，完全没有这个菜单呀
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- [x] Make sure you are using the latest version of [WeSketch](https://github.com/weixin/WeSketch)
- [x] OS Version: `macOS (10.12.x)`
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