title: Merge a branch with Git Flow keeping the branch still alive
body: <p>I'm starting using <a href="https://github.com/nvie/gitflow" rel="noreferrer">git flow</a> and I understand that doing:</p>
  
  <pre><code>git flow feature start my-feature
  git flow feature finish my-feature
  </code></pre>
  
  <p>I create a feature and then, when i've finished my changes, I merge it with the develop branch.
  The finish flow command literally <strong>delete the feature branch</strong> after the merge action.</p>
  
  <p>My question is: is there any way using git flow to merge my feature with develop <strong>without deleting</strong> it after merge.</p>
  
  <p>And my second question would be: <strong>is this workflow correct?</strong> I mean, is it right keeping alive feature branches while merging with develop, just to update the 'main' branch with some changes and keeping to work on the feature branch?</p>