New shortcode, uses JS (sadly) but at least it doesn't break the

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layouts/_default/single.html

@@ -70,4 +70,11 @@
     </aside>
 
   </article>
+       <script src="{{ "js/baguetteBox.min.js" | relURL}}" rel="application/javascript"></script>
+      <script>baguetteBox.run('figure', {
+        captions: function(element) {
+            return element.getElementsByTagName('img')[0].title;
+        }
+      });</script>
+
 {{ end }}