title: How to break UILabel's text on characters, not on words
body: <p>I would like to achieve an effect that I would like to visually explain: </p>
  
  <p>Let's say I have the word 'stackoverflow' that I would like to draw in a given UILabel in a constrained rectangle like so: </p>
  
  <pre><code>+---+ 
  |sta|
  |cko|
  |ver|
  |flo|
  |w  |
  +---+
  </code></pre>
  
  <p>So I would like to break strings or sentences based on their characters. Is that achievable ? </p>