Ethan Centaurai:
	- ShowHide: Experimental new logic that turns buttons invisible instead of hiding them.
	- Appearance: Prevent an error caused by out-of-date versions of LibDBIcon-1.0.
	- Appearance: Fix a typo that was causing an error.
	- Appearance: Register for the new LibDBIcon_IconCreated callback.
	- ShowHide: Small re-arrange.
	- QuestTracker: Now enabled by default.
	- Appearance: Remove debug.
	- Appearance: Button border alpha settings now work with buttons created by LibDBIcon-1.0.
	- Appearance: Fix error message format strings.
	- Appearance: Remove AceTimer-3.0.
	- Appearance: Check for new buttons on ADDON_LOADED events instead of every second.
	- Appearance: Set the default minimap strata to LOW.
	This matches Blizzard's default minimap strata settings.
	- Appearance: Simplify the strata options to low, medium and high.
	- Appearance: Remove debug.
	- Appearance: Fix button border alpha feature.
	Why this was not throwing up errors is beyond me.
