Version 1.1.4
* Updated it to work with latest patch.
* Added a bunch of precalibrated zones.
* Made the function InInstance work correctly (I think!).
* Also added a InBattleground function.
* Added a few safety things to the calibration function, but I have not
managed to trigger them yet.

Version 1.1.3 (not released)
* Added a lot of zone calibrations.

Version 1.1.2
* Another embarrasing bug found and fixed.

Version 1.1.1
* Embarrasing bug found and fixed.

Version 1.1.0
* Redesigned to reduce number of global variables.

Version 1.0.2
* Some bug fixes.

Version 1.0.1
* Drastically improved distance calculations.

Version 1.0.0
* First release (that was never really released).