title: Finding out the installed version of twig
body: <p>Is there a way to find out my installed version of Twig?</p>
  
  <p>Something like </p>
  
  <pre><code>&lt;p&gt;The current version is {% twig.version %}&lt;/p&gt; 
  </code></pre>
  
  <p>(although I know that's not even close to being right).</p>