replace bitwise OR with Math.round

src/Shape.js

@@ -121,7 +121,7 @@
 
             bufferHitCanvas.getContext().clear();
             this.drawScene(bufferHitCanvas);
-            p = bufferHitCanvas.context.getImageData(pos.x | 0, pos.y | 0, 1, 1).data;
+            p = bufferHitCanvas.context.getImageData(Math.round(pos.x), Math.round(pos.y), 1, 1).data;
             return p[3] > 0;
         },
         // extends Node.prototype.destroy 

src/filters/Blur.js

@@ -334,7 +334,7 @@
      * @param {Object} imageData
      */
     Kinetic.Filters.Blur = function(imageData) {
-        var radius = this.blurRadius() | 0;
+        var radius = Math.round(this.blurRadius());
 
         if (radius > 0) {
             filterGaussBlurRGBA(imageData, radius);