footnote_prefix.html in kramdown-2.3.1

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+ new

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-<p>This is a<sup id="fnref:adf123-ab" role="doc-noteref"><a href="#fn:adf123-ab" class="footnote">1</a></sup> footnote<sup id="fnref:adf123-ab:1" role="doc-noteref"><a href="#fn:adf123-ab" class="footnote">1</a></sup>. And another<sup id="fnref:adf123-bc" role="doc-noteref"><a href="#fn:adf123-bc" class="footnote">2</a></sup>.</p>
+<p>This is a<sup id="fnref:adf123-ab" role="doc-noteref"><a href="#fn:adf123-ab" class="footnote" rel="footnote">1</a></sup> footnote<sup id="fnref:adf123-ab:1" role="doc-noteref"><a href="#fn:adf123-ab" class="footnote" rel="footnote">1</a></sup>. And another<sup id="fnref:adf123-bc" role="doc-noteref"><a href="#fn:adf123-bc" class="footnote" rel="footnote">2</a></sup>.</p>
 
 <div class="footnotes" role="doc-endnotes">
   <ol>
     <li id="fn:adf123-ab" role="doc-endnote">
       <p>Some text. <a href="#fnref:adf123-ab" class="reversefootnote" role="doc-backlink">&#8617;</a> <a href="#fnref:adf123-ab:1" class="reversefootnote" role="doc-backlink">&#8617;<sup>2</sup></a></p>