Vector math library and tests
Simplified game/entity declaration and instantiation and component factory
Deferred component instantiation, better game state tracking
Code cleanup, remove old components.js
Better spin characteristics
DRY up system declaration syntax, offload some math to core/math
Clean up main.js code
More robust entity.component shorthand, full switch to core/math library
Documentation for entity.component shorthand
Quadtree implementation and broadphase collision detection
Add character encoding information into html page
Proposed continuous collision detection system (untested)