Controls:
1. Click and drag to orbit
2. Right click to pan
3. Scroll to zoom
4. Number keys 1 through 5 display different fractals:
1 = Menger sponge
2 = Mandelbulb
3 = Mandelbox
4 = Serpinski Pyramid
5 = Menger Sponge intersected with Mandelbox
6 = Mandelbulb intersected with Mandelbox
5. Press "a" to toggle the mandelbulb animation mode (this makes the mandelbulb animate)
6. Press "r" to reset camera position/orientation