Add author block and publish dates

src/blog/tag.html

@@ -17,10 +17,10 @@ eleventyComputed:
     {% for item in tag.posts %}
     <li class="stack-xs">
         <h2><a href="/post/{{ item.slug }}">{{ item.title.rendered | safe }}</a></h2>
-        <time datetime="{{ post.date }}" class="block">{{ item.date | parseDate | dateDisplay }}</time>
+        <time datetime="{{ item.date | rfc3339 }}" class="block">{{ item.date | dateDisplay }}</time>
         {{ item.excerpt.rendered | safe }}
         <a href="/post/{{ item.slug }}" class="inline-block">Read more</a>
     </li>
     {% endfor %}
 </ol>
-</main>
+</main>