version 1.0

Mandelbrot is working. I've begun steps to attempt to parallelize it. I
finally fixed all compilation errors.
version 1.1

Mandelbrot parallelized. Will try for different coloring schemes and
begin work on Buddhabrot.
version 1.2

Rewrote code so it can use a different coloring scheme. Made the
coloring function part of the fractal class and made it virtual. Also
modified program so it passes by reference.