Started revamp of the Tilemap system. Also removed old 'Advanced Physics' and dropped in p2.js which is what I hope we'll eventually use.

src/physics/advanced/utils/Utils.js

@@ -0,0 +1,25 @@
+module.exports = Utils;
+
+/**
+ * Misc utility functions
+ * @class Utils
+ * @constructor
+ */
+function Utils(){};
+
+/**
+ * Append the values in array b to the array a. See <a href="http://stackoverflow.com/questions/1374126/how-to-append-an-array-to-an-existing-javascript-array/1374131#1374131">this</a> for an explanation.
+ * @method appendArray
+ * @static
+ * @param  {Array} a
+ * @param  {Array} b
+ */
+Utils.appendArray = function(a,b){
+    if (b.length < 150000) {
+        a.push.apply(a, b)
+    } else {
+        for (var i = 0, len = b.length; i !== len; ++i) {
+            a.push(b[i]);
+        }
+    }
+};