add onRelease prop to Swipeable

[cspicuzza]

My use case is unique but I'm sharing in hopes that this prop is included.

I'm currently building out a custom SwipeRow component based on Swipeable. My intention is to allow a "swipe to delete" option. The idea is that once a user drags the row past a certain hotspot, then releases, it would perform that delete action. I also included a haptic to signal to the user that the action is "loaded" and ready to fire.

I'm able to set up a useEffect and track my Swipeable ref's drag state but I see no way to fire an event when the Swipeable is released.