* add section to config file for each module
	+ allow whitelisting and blacklisting under each module, per-channel
	  e.g. "use url_title everywhere except channel ##bar where a bot already
	  provides this"
* auto-rejoin delay
* auto-rejoin selectivity (on some channels not on others)
* add more admin commands for e.g.
	+ adding stuff on the fly
	+ reloading modules, or changing channel blacklists/whitelists