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RabbitTurtles implements a genetic algorithm to simulate a simple life form 
("rabbit turtles") in a world of limited resources. The name of the project
comes from the name of the assignment, which was to adapt a Logo-esque turtles
library into a simulation of organisms ("rabbits") consuming food (grass) in
the turtle world.

This project ignores most of the given assignment, and instead implements
a genetic algorithm for rabbit survival. Turtles wander randomly and consume
food at a constant rate. The selection function is starvation. When turtles have
sufficient excess energy, they reproduce asexually. A turtle's offspring 
receives a mutation of its own genes, and a percentage of its own stored energy.

A turtle's genome consists of the following genes:

- Appetite: The rate at which the turtle consumes food that it's standing on.

- Reproduction: The amount of energy required for the turtle to create an 
                offspring.

- Reproduction Ratio: The percentage of the turtle's own energy that is given
                      to the offspring.

- Speed: The turtle's rate of travel. Turtles always move at a constant speed.

- Lifetime: The maximum amount of time a turtle may live. When a turtle hits
            its lifetime, it dies of "old age".