Render photos individually, optimize gallery images, and prune old releases

art.html

@@ -33,14 +33,17 @@ wide_gallery: true
       {% if post.published == false %}
         {% continue %}
       {% endif %}
+      {% assign items = post.content | markdownify | lazy_images | gallery_items %}
+      {% for item in items %}
       <li class='lang-{% if post.lang %}{{ post.lang }}{% else %}en{% endif %}'>
         <article class='post-content'>
-          {% if post.anchor %}
+          {% if post.anchor and forloop.first %}
           <span id='{{ post.title }}'></span>
           {% endif %}
-          {{ post.content | markdownify | lazy_images }}
+          {{ item }}
         </article>
       </li>
+      {% endfor %}
     {% endfor %}
   </ul>