title: How to copy commits from one branch to another?
body: <p>I've got two branches from my master:</p>
  
  <ul>
  <li><strong>v2.1</strong>: (version 2) I've been working on for several months</li>
  <li><strong>wss</strong>: that I created yesterday to add one specific feature to my master (in production)</li>
  </ul>
  
  <p>Is there a way to copy yesterday's commits from wss to v2.1?</p>