Wait/loop mode

[mythmon]

I'm using serial-monitor to do microcontroller development, and it's common for my serial device to appear and re-appear many times while I try different versions of my code. It would be useful to be able to start serial-monitor before my serial device is available, and have it attach to the next matching device.

Additionally, while in this "wait" mode, it would be useful to optionally go back to wait mode when the device disconnects. Then when the device re-connects, serial-monitor would automatically reconnect. This way I could leave serial-monitor running constantly while I reprogram and restart my microcontroller.

[artisdom]

had a half-cooked one here:

https://github.com/artisdom/serial-monitor/tree/wait_for_port_available

wanted to do more testing, but Windows 10 keeps freezing when the connected USB devices are power cycled.