Big ocean
Added mines
Mines visible in circle
Add game over
Center ship
Add speed adjustment
Add some sprites
Make mine larger
Make all steps fractions of a sec
Make everything stay upright on turns
Rotate faster
Pause on spacebar
Start in lower-left corner
Add pirate ships
Move heading to controller
Fix pirate ship rotation
Move mines to controller

Make hitting mines non-fatal
Add cargo
Add direction marker
Remove mine on collision
Add boxes
Unlimited speed