title: Unpoly up-follow not loading contents via XHR
body: <p>I have a link like so that isn't being loaded via XHR:</p>
  <pre><code>&lt;a href=&quot;/hb/test2/&quot; up-target=&quot;#content&quot; rel=&quot;nofollow&quot;&gt;&lt;button type=&quot;button&quot;&gt;Action&lt;/button&gt;&lt;/a&gt;
  </code></pre>
  <p>How to get this to load?</p>