title: vue async call in created() lifecycle hook
body: <p>I need to call below method in <code>created()</code>. For this purpose, I need to make <code>created()</code> as <code>async</code>. Per Vue documentation, <code>created()</code> is called <em>synchronously</em>. Will Vue Framework <code>await</code> on <code>created()</code> to avoid any race conditions?</p>
  
  <pre class="lang-js prettyprint-override"><code>this.isAuthenticated = await authService.isAuthenticated();
  </code></pre>