plugins/commands: use return value of command handler functions as reply
bot: remove an empty line that's been bugging me
plugins/ban_manager: reply to untrack command
add IRCv3 CAP support
join more than one channel
send events for all IRC commands
plugins/ban_manager: fix banlist limit, probably needs to be parsed properly
add util plugin; move rehash and reload there
remove various useless debugging output
add SASL-based NickServ auth; this will eventually support PM based identification too