TZStackView cannot be subclassed in Swift 3, since the class is `public` instead of `open`. We have to add some additional functionality to this class, so it would be great if you could make this class open. Thanks!
TZStackView cannot be subclassed in Swift 3, since the class is
publicinstead ofopen.We have to add some additional functionality to this class, so it would be great if you could make this class open. Thanks!