title: Is there a way to automatically merge notes if commits for those notes get squashed?
body: <p>For example:</p>
  
  <pre><code>git commit -am "Something"
  git notes append -m "Dark "
  git commit -am "Something"
  git notes append -m "Side"
  
  git rebase -i
  # now I squash two commits and I expect to see "Dark Side" here
  # but it show that note is undefined
  git notes show 
  </code></pre>