title: Preserve line breaks in title using pandoc
body: <p>Consider the following title block in pandoc-flavored Markdown:</p>
  
  <pre><code>% Higgelty Pigglety Pop!
    or
    There Must Be More to Life
  % Maurice Sendak
  </code></pre>
  
  <p>Here, line breaks are part of the title. It is possible to reformat the title in order to insert it into regular text flow, e.g. "Higgelty Pigglety Pop! Or, There Must Be More to Life", but when not talked about but used on the title page of a document, preserving the line breaks is crucial. Depending on the style, it might look like this:</p>
  
  <pre>
            <strong>Higgelty Pigglety Pop!
                     or
          There Must Be More to Life</strong>
               <em>Maurice Sendak</em>
  </pre>
  
  <p>My question: How can I achieve a proper multi-line title display in the output of pandoc?</p>
  
  <p>A portable version would be preferred, but I'd also be content with a LaTeX-only hack.</p>