fixed graph2d not updating on animation correctly

examples/graph2d/01_basic.html

@@ -47,7 +47,7 @@
     end: '2014-06-18'
   };
   var graph2d = new vis.Graph2d(container, dataset, options);
-
+  graph2d.fit();
 </script>
 </body>
 </html>

lib/timeline/component/LineGraph.js

@@ -549,7 +549,7 @@ LineGraph.prototype.redraw = function(forceGraphUpdate) {
   resized = this._isResized() || resized;
   // check whether zoomed (in that case we need to re-stack everything)
   var visibleInterval = this.body.range.end - this.body.range.start;
-  //var zoomed = (visibleInterval != this.lastVisibleInterval) || (this.width != this.lastWidth); // we get this from the range changed event
+  var zoomed = (visibleInterval != this.lastVisibleInterval) || (this.width != this.lastWidth); // we get this from the range changed event
   this.lastVisibleInterval = visibleInterval;
   this.lastWidth = this.width;
 
@@ -563,7 +563,8 @@ LineGraph.prototype.redraw = function(forceGraphUpdate) {
     this.svg.style.left = util.option.asSize(-this.width);
   }
 
-  if (this.abortedGraphUpdate == true || forceGraphUpdate == true) {
+  // zoomed is here to ensure that animations are shown correctly.
+  if (zoomed == true || this.abortedGraphUpdate == true || forceGraphUpdate == true) {
     resized = resized || this._updateGraph();
   }
   else {