In our application we would like to hide the "Press Ctrl-C to close the session." message which Sish sends after a connection as been established. I am willing to prepare a PR for this, but would like to check in first for possible solutions. I see the following options:

1. Explicit flag or config option to hide this specific message
2. Some general kind of --quiet flag or config option which might potentially hide other messages as well (if so, which ones?)
3. Verbosity level config option
4. Making the message text configurable in the form of a welcome message (with setting it to an empty string disables the message completely)

@antoniomika Do you have an opinion on this? I would possibly prefer option 4.