Use turbo mode
A beautiful attractor. Much less creepy than the gingerbreadman.
Description
https://en.wikipedia.org/wiki/Tinkerbell_map
x(n+1) = x^2(n)-y^2(n)+ax(n)+by(n)
y(n+1) = 2x(n)y(n)+cx(n)+dy(n)
a = 0.9, b = -0.6013, c = 2, d is varied from 0.5 to 0.4
