title: In react router v4 how does one link to a fragment identifier?
body: <p>Given the very simple page (having assumed React and react-router@4 have been imported):</p>
  
  <pre><code>// Current location: example.com/about
  &lt;Link to="/about/#the-team"&gt;See the team&lt;/Link&gt;
  // ... loads of content ... //
  &lt;a id="the-team"&gt;&lt;/a&gt;
  </code></pre>
  
  <p>I would expect the above, upon clicking "See the team" would scroll down to the id'ed team anchor. The url correctly updates to: <code>example.com/about#the-team</code>, but it doesn't scroll down. </p>
  
  <p>I have tried alternatives such as <code>&lt;a name="the-team"&gt;&lt;/a&gt;</code> but I believe this is no longer spec (nor does it work). </p>
  
  <p>There are plenty of work arounds on github for react-router@v2 but they rely on the update callback present on BrowserRouter that is no longer present in v4. </p>