Feature Request: when exiting, allow to do some action before

[knackko]

Hello, mprocs helps me a lot in with multiple script to launch. One thing when exiting mprocs and terminating all the processes should to allow some action before. It can be useful for processes which needs some cleaning (with commands). It is the case in my scripts, if don't clean before exit, there will be an issue for the remote process (not launched through mprocs). A workaround I've found is to adding a process in mprocs to inform the user to launch manually the required command before exiting mprocs. Thanks.