Progress on Maze Generation

* Finished implementing link planning for mazes. Doors aren't placed yet
because that's up to Decorators and those haven't been implemented yet.
* Added bounding walls to mazes.
* Added decay effects to mazes.

src/main/java/StevenDimDoors/mod_pocketDim/Point3D.java

@@ -55,6 +55,13 @@ public class Point3D implements Serializable {
 	{
 		return this.z = z;
 	}
+
+	public void add(int x, int y, int z)
+	{
+		this.x += x;
+		this.y += y;
+		this.z += z;
+	}
 	
 	@Override
 	public Point3D clone()