title: NSAttributedString ignores Autoshrink and numberOfLines for UILabel (iOS 6)
body: <p>I have UILabel with 
  number of lines = 2
  system font size = 15
  minimum font size = 8
  Line break mode - Truncate tail</p>
  
  <p>When I set long text which have type NSString for UILabel it works fine and shows multiline text (scaled if needed).
  When I am trying to set text with type NSAttributedString it ignores minimum font size and Autoshrink so I see one line text with maximum font size.</p>
  
  <p>Is it possible to solve this problem</p>
  
  <p>Looks something like this (Label size is const)</p>
  
  <pre><code>-----------------------
  | normal NSString  Text|
  | very  very  long ... | 
  -----------------------
  
  ---------------------------
  |NSAttributedString tex...|
  ---------------------------
  </code></pre>