title: git diff on date?
body: <p>I'm accustomed to running a git comparison that will allow comparison with local git revs like:</p>
  
  <pre><code>git diff HEAD HEAD~110 -- some/file/path/file.ext
  </code></pre>
  
  <p>Is it possible to use the date instead? And if so, how? I would like to be able insert in place of the "110" in the above example, a date such as "4 Dec 2012".</p>