Merge pull request #36 from NordonOscillius/patch-1

OmniLightShadow.removeCaster() method fix

src/alternativa/engine3d/shadows/OmniLightShadow.as

@@ -901,8 +901,13 @@ package alternativa.engine3d.shadows {
 		public function removeCaster(object:Object3D):void {
 			var index:int = _casters.indexOf(object);
 			if (index < 0) throw new Error("Caster not found");
+			if (index == _casters.length - 1) {
+				_casters.pop();
+			}
+			else {
 				_casters[index] = _casters.pop();
 			}
+		}
 
 		/**
 		* Clears the list of objects, that cast shadow.