title: Boost tokenizer to treat quoted string as one token
body: <p>Is there a way to make Boost tokenizer to split below string without splitting quoted part?</p>
  
  <pre><code>string s = "1st 2nd \"3rd with some comment\" 4th";
  
  Exptected output:
  1st
  2nd
  3rd with some comment
  4th
  </code></pre>