Rare Spawn Overlay

Version 5.1 Sep 23, 2013 Added Legends to maps overlays

Version 5.0 Sep 20, 2013 Updated for Mist of Pandaria and patch 5.4

Updated for 4.3

Version 4.2.40000 Oct 16, 2010 Updated for Cataclysm and 4.0.1

Version 4.2 Sept 5, 2010 Fixed tooltip/quest POI issue

Version 4.1 Sept 4, 2010: Updated for 3.3.5 Removed LibRareSpawns

Version 4.0 June 18, 2009: Added an API for other add-ons to use. Moved common data out to LibRareSpawns (included in this release, but usable by other add-ons) some random bugs fixed.

Version 3.3 June 7, 2009: Added Bro'Gaz the Clanless (Nagrand spawn) Updated (fixed) some pathing information Added creature type (beast, humanoid, demon ...) to legend popup

Version 3.2 June 5, 2009: Fixed some spelling errors with mob names. Added images for all mobs - hover over map legend to show images. Reduced some cycle usage during updates. Added Time-Lost Proto Drake.

Version 3.0 June 3, 2009: Rare spawns are now shown on the battlefield minimap. Individual Rare spawn location display can be turn on and off

Version 1.1 May 2, 2009: Added outland maps updated some maps to new mobs (Gondria in Zul'drak) and correct locations of current mobs.

Version 1.0 - all northrend and maps provided.

Please keep those bug-reports coming.  If you have better information on how a mob paths, please send it in.
A known mapping issue is where Vale overlays are also displayed on the inside of shrines maps.
Also Rare Spawn Overlay conflicts with Carbonite and ElvUI, this is due to the addons modifying the map, and RSO isn't able to link up properly at this time.