Results 2 issues of vhysug

![image](https://user-images.githubusercontent.com/19337219/95709920-4528ea80-0c92-11eb-89d7-647265f8ecf8.png) 上下移动乱码: 图上行号显示绘制就是 左右移动当前行也会有乱码

I set a client to `threading.Local()` variable, I dont know whether it is related to the problem e.g. `thread.Lcoal().client = make_client()` and use the timeout_decorator, not use_signals Here is the...