This is a lot of fun to play with. However, I managed to find a case where it got extremely slow. I changed z^2+c to z^a+c (a from 1..3), and it suddenly got ma

This is a lot of fun to play with. However, I managed to find a case where it got extremely slow. I changed z^2+c to z^a+c (a from 1..3), and it suddenly got many orders of magnitude slower.