Remove legacy and never used response.Hook
Backport part of v4 Bot class
Fix list function in prompt
Rework CTCP responses and implement FINGER, PING and SOURCE
(wip) reworking of the Message class; backported from v4
Move countdown to a separate module in tools
(wip) use select instead of a thread by server. Currently read and write seems to work properly, we lost some code (like more, next, ...) that never should be in server part
Implement more and next features as module instead of part of core
Server disconnection works properly
Fix private and CTCP responses