checking in first phase of new hit detection algo, which enables high performance event detections even if there are hundreds of thousands of shapes. This is a giant improvement over the previous algo, and is a fairly big architectural change. Since the Animation architecture and API is also changing, I feel that these changes are big enough to warrant a new major version, v4.0.0

tests/js/manualTests.js

@@ -68,7 +68,7 @@ Test.prototype.tests = {
         layer.add(circle);
         stage.add(layer);
         
-        //document.body.appendChild(stage.pathCanvas.element)
+        document.body.appendChild(layer.bufferCanvas.element)
     },
     'TRANSITION - transition position and rotation': function(containerId) {
         var stage = new Kinetic.Stage({