when handled by a CommandHandler, attach triggering event to the Message
fatbotslim.handlers.EVT_ALL is useless, remove it
rename fatbotslim.irc.bot._handlers to handlers (make it public)
provide a HelpHandler to generate commands help automatically
syntax conventions
also handle commands without docstrings and display a "no help" message
document fatbotslim.handlers.HelpHandler
better HelpHandler documentation + ColorMessage documentation