reopen log tail / playback

[swantzter]

When I re-open the client I'd like to also re-attach to my log files/scrollback then replay znc playback since I disconnected so it appears to me as if I never closed or left the channel/client

I also want this functionality when I join a znc detached a channel, or when I've left a channel completely. (this would kinda require a way to /close a channel or window without /clear'ing it)

This scrollback could be limited to X lines, that's fine with me

So on /join or on client start I'd like if it did this:

1. Open the channel window
2. Attach the tail of the log files for that channel so I can Pg Up/Pg Down in it
3. Send JOIN to server
4. replay znc playback (I think that's automatic)

Why? Well I want to use /grep rather than having to go dig in my logs dir just because the message is a day old