facebook/pop — pull request #100 by hfossli (2014-05-30 09:53:36+00:00)
Title: Cancelling any ongoing UIScrollView animation in UIScrollView

If there is any UIScrollView animation of any sort:
- Say the user scrolled a little bit and the UIScrollView is decelerating.
- Or `[scrollView setContentOffSet:p animated:YES]` was triggered.
- Or the user tapped on the statusbar to scroll to top

These animations will interfere with pop-animation since they will both work simultaneously. Setting `-[UIScrollView setContentOffset:animated:]` will cancel/stop any UIScrollView animation.