title: Add reviewers via the commit message
body: <p>Is it possible to add reviewers in Gerrit via a commit message? Consider this commit message:</p>
  
  <pre><code>component: make foo more bar
  
  Foo was not bar enough, this change adds more bar to make foo fit better
  in baz.
  
  Change-Id: I4724e283214e0bfbb85a8e3d8db4971618e2609a
  Cc: alice@example.com
  Cc: bob@example.net
  </code></pre>
  
  <p>Here, <code>alice@example.com</code> and <code>bob@example.net</code> must be added as reviewers when pushing to gerrit.</p>
  
  <p>I am aware of a <a href="https://stackoverflow.com/q/16658879/427545">special branch specifier</a> to add reviewers, but would like to have something more automated as I create commits. The changes are independent, though it would be nice if I could group them on a topic branch because they are related.</p>