title: Handlebars: How do I add a `rel=preload` parameter to a `{{stylesheet}}` tag?
body: <p>I have</p>
  <pre><code>{{{stylesheet '/assets/css/theme.css' }}}
  </code></pre>
  <p>Which outputs:</p>
  <pre><code>&lt;link href=&quot;css/theme.css&quot; rel=&quot;stylesheet&quot;&gt;
  </code></pre>
  <p>I want to add <code>rel=&quot;preload&quot;</code> to that link tag</p>
  <p>So far I've tried variations of:</p>
  <pre><code>{{{stylesheet '/assets/css/theme.css' rel=&quot;preload&quot; }}}
  
  {{{stylesheet '/assets/css/theme.css' rel:preload }}}
  
  {{{stylesheet '/assets/css/theme.css' 'rel':'preload' }}}
  </code></pre>
  <p>Without any success.</p>
  <p>Would anyone know the correct way to do this?</p>