title: How to see which commits in one branch aren't in the other?
body: <p>I have two branches <code>devel</code> and <code>next</code>. In devel I have a more or less huge amount of commits. Some of the commits are cherry picked in <code>next</code>. Also I added some commits to next which are merged to <code>devel</code>.</p>
  
  <p>Now I would like to see what is missing in <code>next</code>, so I can test the changes in detail before bringing them to <code>next</code>. My question is now, how can I see which commits are in <code>devel</code> but not in next? </p>