Hi guys! I have this scene where I import different meshes with lots of polygons, like here: http://babylonjs-playground.com/#1OI6LZ#11  You'll see that I'm importing the same mesh repeated times instead of using instances on purpose.  So at some moment, I'd like to remove some of these meshes.  In the example above, when you click on the skulls, the mesh.dispose() is called. When I track the memory with the Chrome JS Heap timeline tool I can't really see the memory released tho