title: How to compare two revisions in Bitbucket?
body: <p>My team is using Bitbucket for our git repository and we've recently starting using the pull request functionality for code reviews.  It works fine on the first review, but if it goes through multiple iterations (that is, changes are made and pull request updated), I would like to see a link with just the new changes that were made since the last code review.</p>
  
  <p>I looked into the "compare" functionality but the UI looks like it can only compare between branches.  Is there a simple way to get a diff between two commits?</p>