Cubic Fractal rounded

Instead of the cubes I now use spheres and create a hull to connect to the last sphere, this gives some interesting results. I haven't found the optimal value for the size_decrement variable yet, when it is to high parts will overlap and when it is very low the structure looks very skinny. I used 0.41 for a recursion of 3, 0.33 for recursion 4 and 0.3 for 5. Generating the stls for high recursions is really slow.
The scad file works with OpenSCAD, seems like the hull function is not supported