title: How to shrink the size of the text inside a label
body: <p>Im trying to get text to fill the entire bounds of a label no matter how long or short the text string is. I want the largest possible font size without any truncation or clipping.</p>
  
  <p>I set up my label like so:</p>
  
  <pre><code>var messageTitle = TTTAttributedLabel()
  messageTitle.setTranslatesAutoresizingMaskIntoConstraints(false)
  messageTitle.font = AppTheme.largeMessageFont()
  messageTitle.verticalAlignment = .Bottom
  messageTitle.numberOfLines = 0
  messageTitle.adjustsFontSizeToFitWidth = true
  messageTitle.minimumScaleFactor = 0.2
  </code></pre>
  
  <p>And set the various constraints to set the size of the label to be 250 x 250.</p>
  
  <p>I'm pretty sure this used to work. The label text now gets truncated if it is long when it should be shrinking the size of the text</p>