A custom zooming transition animation for UIViewController. RMPZoomTransitionAnimator provide a custom transition zooming animation. Not only UICollectionView, this is possible to use any other UIViewController transition. This transition animation is like the "Pinterest" animation, but this is very simple and small library.
Extension to NSDate made in Swift to make life easier. Here some functionalities: compare dates using common compare operators: >, >=, <, <=, get interval between dates using custom operator >-<, add date components by using aritmethic operators, curryed functions for add/subtract date components