Added Guild Bank support. WhoHas will now scan and summarize your guild bank contents by itself - no other addons needed. Guild bank contents are only guaranteed correct while you have the guild bank window open. If other guild members change the guild bank at other times, WhoHas will not see the change until you visit the guild bank again.
Changed the way tooltips are detected. This makes WhoHas play better with Baggins and other addons that implement UpdateTooltip. World, minimap, and buff/debuff tooltips are still handled the old way and may flicker, but item and action tooltips should now be stable.
Other minor fixes to display options and updating behavior.
