Winner of the Differential Steering challenge Problem

The winning entry from the submissions to the challenge came from Musab Alhayan.  The code that he wrote reduced the total cost function (or "energy") needed during the simulation from 151 in the original problem to 109.  His code for the controller can be found as a comment on the original posting about the challenges.

Thanks for everyone who participated in this challenge, and congratulations to Musab for his winning submission!