Test to ensure styletopleft animations happen in sync
Div positions are allowed to differ by sub-pixel values
Check divs are equal within a tolerance only
Attempt to sync animations. Still need to ensure onComplete() fired after final DOM update.
Call onComplete() callback after final update to screen
Try/finally rather than swallowing callback exceptions
Merge branch 'master' into tween
Remove a couple of commented out lines
Indentation fix only
Merge pull request #34 from fmtvp/tween

Ensure that animation frame updates happen simultaneously onscreen