Don't show history to bots (feature request)

[weedgirl68]

Hello! I'm currently writing a bot to bridge Discord and ssh-chat - however when the bot reconnects I wouldn't want to send the old messages to Discord again, as that would get annoying quickly.

As such, I forked and made a (extremely terrible) fix:
weedgirl68@4caea4e

However, some people would maybe want to see their history with bots, so it could probably be set to another variable. Thanks!

[shazow]

Solid feature request. Unfortunately I'm not actively working on ssh-chat right now but would add if I do in the future. :)