introducing templating inheritance and macros

site/content/templates/article.html.macro

@@ -0,0 +1,11 @@
+{% macro article(id, title, body, publish_date) %}
+<article>
+    <div class="post-content">
+        <a href="/id/{{ id }}" class="post-link">
+            <h2 class="post-title">{{ title }}</h2>
+        </a>
+        <sub class="post-publish-date"> {{ publish_date | date(format="%Y-%m-%d at %H:%M") }}</sub>
+        <p class="post-body">{{ body }}</p>
+    </div>
+</article>
+{% endmacro article %}