Bugtor k

I have been considered writing some articles about fractals and some example programmes for them. During the writing of this particular one, I knew something was wrong in the code but rather than finding the bug I finished the code to run it, then spot the bug based upon the output. Instead I got a precursor to this render and some additional ideas to try out. It extends to higher dimensions, but I have not poked at that bit yet.

Enjoy.