Added Game core loop stepping support. Super-useful for debugging, and helped me track down the issue with jittery physics collision. Double-win!

src/core/World.js

@@ -156,22 +156,21 @@ Phaser.World.prototype.postUpdate = function () {
 */
 Phaser.World.prototype.setBounds = function (x, y, width, height) {
 
-        if (width < this.game.width)
-        {
-            width = this.game.width;
-        }
+    if (width < this.game.width)
+    {
+        width = this.game.width;
+    }
 
-        if (height < this.game.height)
-        {
-            height = this.game.height;
-        }
+    if (height < this.game.height)
+    {
+        height = this.game.height;
+    }
 
     this.bounds.setTo(x, y, width, height);
 
     if (this.camera.bounds)
     {
         //  The Camera can never be smaller than the game size
-
         this.camera.bounds.setTo(x, y, width, height);
     }