UIControlState.Normal is Unavailable : <p>Previously for <code>UIButton</code> instances, you were able to pass in <code>UIControlState.Normal</code> for <code>setTitle</code> or <code>setImage</code>.  <code>.Normal</code> is no longer available, what should I use instead?</p>

<pre><code>let btn = UIButton(frame: CGRect(x: 0, y: 0, width: 20, height: 20))
btn.setTitle("title", for: .Normal) // does not compile
</code></pre>

<p><sup>(This is a canonical Q&amp;A pair to prevent the flood of duplicate questions related to this <code>UIButton</code> and <code>UIControl</code> changes with iOS 10 and Swift 3)</sup></p>
