Draw sprites at integral coordinates
Remove varn (unused)
Use new asset URL
Use CDN for assets
Don't busy-wait when no threads are running
Use Object.create(null) for var/list refs
Move proxying into loadImage
Add a missing semicolon
Redeclare a variable
Add some missing semicolons
Remove non-breaking space
Fix default handleError
Add some missing semicolons
Remove sc (unused)
Remove hasOwnProperty (unused)
Remove context (unused)
Remove unnecessary save/restore pair
Don't register clicks on ghost-invisible sprites
Merge pull request #204 from nathan/click-through-ghosts

Don't register clicks on ghost-invisible sprites
Merge pull request #200 from nathan/remove-hasownproperty

Remove hasOwnProperty (unused)