SloppySwiperDelegate to fix issues with tab bars.
Adds support for 3D Touch.
Fixes a weird "locking" of the whole view when swiping on the right of the root view controller. This especially happend if this view contained a (subclass of) UIScrollView.
Fixes incorrect animation when hidesBottomBarWhenPushed is used.
Adds a specialized pan gesture recognizer that fails if the panning started in the wrong direction. It minimizes collisions between it and other gesture recognizers.
Add fading of the left-side shadow during animation.