TODO

   1 - add (optional) timeout for wait_for_hidden_host
   2
   3 - add ability for modules to register additional sockets to monitor
   4   (and socket_listener example module)
   5   also FDs so the bot can monitor a pipe
   6   - add a pipe which allows to input commands even when IRC connection is gone
   7     this might be difficult since there won't be a bot or user or chan object...