Painted additional no pathing area (though it doesn't seem to have an effect on flying units).
Removed the ability of Zerg Overlord to morph into Overseer.
Added Detector ability to Zerg Overlord which is made available after upgrading to Lair.
Added Detector to Terran Sensor Tower.
Removed Terran Missle Turret.
Changed Zerg Overlord and Protoss Observer Movers > Pathing Mode = Ground. This keeps these units from flying outside the map bounds and thus circumventing opponents defenses by flying around the edge of the map.
Changed Zerg Overlord and Protoss Observer Movement > Plane Array = Ground. Enables attacks from land units to do damage.
Changed Zerg Overlord and Protoss Observer Movement > Collide = Ground. This provides ground based collision for these units.
Changed Zerg Overlord and Protoss Observer Unit > Visual Height = 0, limiting their line of sight to same or lower levels.
