Spin-off of Project Asteroids spaceship

Simulate the spaceship from the classic arcade game Asteroids. Suggested steps:
1. Start with one of the Mover object examples.
2. Draw the spaceship with a triangle and two thrusters on the bottom.
3. React to the user's key press: if they press left arrow, turn to the left, and if they press the right arrow, turn to the right.
4. If they press z, apply a thrust force that accelerates in the direction it's pointing.
5. Make the spaceship wrap around the edges of the canvas.