title: Issue parsing MHTML
body: <p>I was able to use <a href="https://stackoverflow.com/questions/3230305/how-to-read-or-parse-mhtml-mht-files-in-java">this question</a> as a starting point in parsing an "mht" file but the "3D" in the anchor tags (e.g.: <code>&lt;a href=3D"[my anchor]"&gt;[anchor text]&gt;&lt;/a&gt;</code>) breaks all the internal links and embedded images. I can have the parser replace "=3D" with just "=" (e.g.: <code>&lt;a href="[my anchor]"&gt;[anchor text]&gt;&lt;/a&gt;</code>) and it appears to work fine but I want to understand the purpose of that "meta markup".</p>
  
  <p>Why does exporting from ".docx" to ".mht" add "3D" to the right-hand sides of most (if not all) of the html attributes? Is there a better way to handle them or a better regex to use when replacing them?</p>