[WIP] Add figure caption to blog section

templates/blog/card.html

           <div class="card">
             <div class="card-image">
-              <figure class="image is-4by3">
-                <a href="{{ post.permalink }}"><img src="{{ get_url(path="@/" ~ post.relative_path, trailing_slash=true) }}{{ post.extra.depiction.image | safe }}" alt="{{ post.extra.depiction.alt }}" /></a>
-              </figure>
+              <a href="{{ post.permalink }}">
+                <figure class="image is-4by3">
+                  <img src="{{ get_url(path="@/" ~ post.relative_path, trailing_slash=true) }}{{ post.extra.depiction.image | safe }}" alt="{{ post.extra.depiction.alt }}" />
+                  <figcaption>{{ post.extra.depiction.credits }}</figcaption>
+                </figure>
+              </a>
             </div>
             <div class="card-content">
               <a href="{{ post.permalink }}"><h3 class="title is-3">{{ post.title }}</h3></a>