Support different viewport size and world size.
Allow centring of view on a point.
Support POINT boundingbox type.
Minify.
Fix Maths.pointsIntersecting() so it uses obj.pos.
Switch off expensive uncollisions if not needed.
Remove unused code.
Avoid comparing same objects when doing collisions in a more sensible way.
Make better links to source files.
Add minify script shortcut.
Correct capitalisation of GitHub.
Check autoFocus === true explicitly in inputter
Remove unused bindings var from inputter
New inputter API: down() and pressed()

* Support asking whether a keypress was completed in current tick.
* Remove keydown() and keyup() from public API.
Add tests for inputter.
Remove renderer.worldSize

* A complete waste of time.
Rename renderer.viewCenter to viewCenterPos
Renderer getters for viewCenterPos and viewSize
Only clear on screen area on each draw().
renderer.onScreen: true for partialy onscreen objs