title: Multi-line NSTextFields
body: <p>I want to know how to do something like Adium does, where when you type more text than the field can handle it expands into a new line.  Like this:</p>
  
  <p><img src="https://i.stack.imgur.com/vWLZy.png" alt="enter image description here"></p>
  
  <p>Either how can I do this, or where in the Adium source code can I find this?</p>