title: Shortcut to changing 'pick' to 'squash' on git rebasing
body: <p>When git rebasing a branch, you can squash commits by changing <code>pick</code> to <code>squash</code> on each line you want to squash. You can also change it to <code>s</code> instead as a shorthand way.</p>
  <pre><code>pick 4306fab7 add stuff
  pick d1e9645a test ci
  s 5d0458e6 test ci
  s 9cdb9984 test ci
  </code></pre>
  <p>there has to be a way to shortcut the line changes. For example, if you had a branch with 50 commits you wanted to squash and rebase, you would have to go by-hand and change <code>pick</code> to <code>s</code> for each line, which takes forever.</p>
  <p>Is there a cmd+option+s shortcut that changes it for you so you just have to do that command on each line?</p>