title: Auto-resizing NSTokenField with constraint-based layout
body: <p>Is there any way to automatically resize the <strong>height</strong> of a NSTokenField (keeping the width constant) using constraints?</p>
  
  <p><code>-sizeToFit</code> should work, but it doesn't. If I set a constraint to keep the width constant and call this method it ignores the constraints and resizes the width only (when what I want is to resize the height only).</p>