Stone platforms improvements.

Stone platforms are not fitting togather exactly. There is a hole in between so if you would like to create a wall out of them you need to overlap them. This in turn creates graphical artifacts when you move your camera or exploring in first person view, making the higher computer resources consumption. I think Mac noticed it on one of his streams but he thought that it was his graphical card going crazy :). Also you need to place significanlty more objects if you want to create a castle for example. It also makes the maps heavier in size.