title: Swift UITabBarController hide with animation
body: <p>I'm trying to add animation to my tabBarController when hidden. Im able to accomplish this effect with the <code>navigationBarController</code> by using <code>self.navigationController?.isNavigationBarHidden = true</code>. I'm able to hide the tabBar by using <code>self.tabBarController?.tabBar.isHidden = true</code> but i do not get the animation how can I do this thank you in advance.</p>