This flag allows users on UNIX systems to set the tty for the program
being debugged by Delve. This is useful for debugging command line
applications which need access to their own TTY, and also for
controlling the output of the debugged programs so that IDEs may open a
dedicated terminal to show the output for the process.
Using a stop channel to signal clean shutdown to the server's
goroutines. Also updates the tests to trigger disconnectChan.
This helps avoid spurious error logs when the client disconnects, when
Ctrl+C is pressed, etc.
* Panic guard for DAP request handling
* Use GetSeq
* Re-vendor new version of go-dap
* Remove comment
* Update error message
* Reuse er.Message in Format
