Add first test, requiring Game to be in asteroids namespace
Add Matrix to asteroids namespace
Update references to Game and Matrix to use the asteroids namespace
Add sinon.js to enable use of spies, stubs and mocks in tests
Fix bug with Game referenced outside asteroids namespace in asteroid.collide
Refactor some functionality from main.js to increase testability
Place BigAlien in asteroids namespace
Use correct namespace for Game in ship
Fix bug causing alien ships to be invincible ;)
Add test for score increase when alien ship is hit by bullet
Add ideas for further development, to be used in the workshop
Add test specifications for bullet and alienbullet
Add test specification comments
Add test specification comments for explosion
Add tasks for shield