title: docx to html with phpword issue
body: <p>I'm encountering an issue when converting docx document into HTML with PHPWord library (<a href="https://github.com/PHPOffice/PHPWord" rel="nofollow noreferrer">https://github.com/PHPOffice/PHPWord</a>).</p>
  
  <p>Here is the code snippet I use:</p>
  
  <pre><code>$phpWord = \PhpOffice\PhpWord\IOFactory::load('test.docx');
  $htmlWriter = new \PhpOffice\PhpWord\Writer\HTML($phpWord);
  $htmlWriter-&gt;save('test.html');
  </code></pre>
  
  <p>The issue is that each block of text is encapsulated in <code>&lt;p&gt;</code> tags regardless if I defined titles in the docx document. I would expect <code>&lt;h1&gt; &lt;h2&gt;</code>... tags to be generated. Bullet list are lost too.</p>
  
  <p>Does it work as designed or did I miss something?</p>
  
  <p>Thank you for your feedback.</p>
  
  <p>Regards</p>