16:10 ratio for test window
Extract Contacts, Geometry out of PolygonalBody
Green dot tracking arrow keys
Move and fix recalculateCentroid
Generate asteroids in center of screen
Draw and track a ship
Tweak asteroid generation settings
Add exponential-eased camera to lag ship slightly

This makes ship bounces and collisions a lot less jerky.
Keyboard interaction for ship
Better simulation params for bumping into asteroids
Draw a flame when the ship's engine is on
Extract transform helper
Draw wrapped display with clipping to hide overlap
Tweak window initialized size
Drop ship density for more bouncing
Pull sketch/canvas context out of World into Simulation
Add basic Particle
Mitchell's best-candidate for distributing asteroids
Reenable the debug controls
Blunt the nose of the ship a bit