Support definition lists (finally!)

[LesML] / TESTING / 📤 / unicode-escapes

<?xml version="1.0"?>
<div xmlns="http://www.w3.org/1999/xhtml"><article lang="en" xml:lang="en"><div class="body"><p>Testing &#x2764; some &#x2764;&#xFE0F; things {U+}! &#x2764;&#x2764;&#xFE0E;&#x2764;&#xFE0F;{U+2764.bad}{U+2764..2766}{U+}</p></div></article></div>