title: WordPress can't access widget in footer with Timber
body: <p>I'm trying to access a widget in my footer, but am getting an output of 0. I've registered the widget as a sidebar:</p>
  
  <pre><code>register_sidebar( array(
    'name' =&gt; __( 'First Footer Widget Area', 'bonestheme' ),
    'id' =&gt; 'first-footer-widget-area',
    'description' =&gt; __( 'The first footer widget area', 'bonestheme' ),
    'before_widget' =&gt; '&lt;div id="%1$s" class="widget-container %2$s"&gt;',
    'after_widget' =&gt; '&lt;/div&gt;',
    'before_title' =&gt; '&lt;h3 class="widget-title"&gt;',
    'after_title' =&gt; '&lt;/h3&gt;',
  )); 
  </code></pre>
  
  <p>My footer.php looks like this:</p>
  
  <pre><code>$timberContext = $GLOBALS['timberContext'];
  if (!isset($timberContext)) {
    throw new \Exception('Timber context not set in footer.');
  }
  $timberContext['content'] = ob_get_contents();
  $timberContext['first-footer-widget'] = Timber::get_widgets('first-footer-widget-area');
  ob_end_clean();
  $templates = array('page-plugin.twig');
  Timber::render($templates, $timberContext);
  </code></pre>
  
  <p>In my footer.twig I try to access the widget like this:</p>
  
  <pre><code>{{ first-footer-widget }}
  </code></pre>
  
  <p>I have two text fields in my widget, titled label and value. I've tried {{ first-footer-widget.label }} and {{ first-footer-widget.value }} to no success. </p>
  
  <p>Any ideas?</p>