Mandelbrot: En-repo a little toy GTK2 script
Mandelbrot: Split the two loops and indent, in advance of an optimization
Mandelbrot: Attempt to optimize... doesn't actually help though
Mandelbrot: Revert previous commit, leaving it in history for the sake of... history

This reverts commit 2134da0e41fb847064fc5e48c19e133afa35e208.
Mandelbrot: Attempt to have the zoom track the mouse pointer - not working