keywords class.

Handles all that stuff like "bot: foo is bar", "bot: foo?"

Fallback after core and auth have had a look at a message and refused to handle it, checks for a keyword command or lookup, otherwise the message is delegated to plugins

create a new Keywords instance, associated to bot bot

drop static keywords and reload them from files, picking up any new keyword files that have been added

load static keywords from files, picking up any new keyword files that have been added

upgrade data files found in old rbot formats to current

save dynamic keywords to file

lookup keyword key, return it or nil

does key exist as a keyword?

handle a message asking about a keyword

handle a message asking the bot to tell someone about a keyword

handle a message which alters a keyword like "foo is bar", or "no, foo is baz", or "foo is also qux"

return help string for Keywords with option topic topic

privmsg handler