Support for updating constraint offset rather then animating contentView.frame

[markst]

I've been able to use this library to achieve the following:

However this meant having to override any function that references contentView.frame.

It would be great to be able to have support for updating the offset using a closure rather than animating the content view frame...

[markst]

Not sure if the gif above is clear enough. But the reveal button doesn't go to the edge of the screen.

[markst]

Can provide my code. But as an example:

override func animateCellSpringRelease() {
    UIView.animate(withDuration: self.animationDuration,
                   delay: 0,
                   options: .curveEaseOut,
                   animations: {
                    self.swipeTrailingConstraint.constant = 0
                    self.layoutIfNeeded()
    },
                   completion: self.releaseCompletionBlock)
}