Use the same template for taglists and the blog index. Move the tagposts into a collection to make life easier

src/_includes/components/blog.njk

@@ -0,0 +1,30 @@
+<main class="wrapper-lg stack-xl">
+    <h1>{{ title }}</h1>
+
+    <aside class="inverse text-center">
+        <p class="mx-auto">
+            Subscribe via <a href="{{feed.rss}}">RSS</a>, <a href="{{feed.atom}}">Atom</a>, or <a href="{{feed.json}}">JSON</a>.
+        </p>
+    </aside>
+
+    <ol class="stack-xl" role='list'>
+        {% for item in posts %}
+        <li class="stack-xs">
+            <h2><a href="{{ item.url }}">{{ item.data.title | safe }}</a></h2>
+            <time class="block" datetime="{{ item.date | dateToRfc3339 }}">{{ item.date | dateDisplay }}</time>
+            <p class="e-content p-summary">{{ item.content | excerpt }}</p>
+            <a href="{{ item.url }}" class="inline-block">Read more</a>
+        </li>
+        {% endfor %}
+    </ol>
+    {% if not tag %}
+    <nav class="blog-nav row" data-spacing="between" aria-label="View more posts">
+        {% if pagination.href.next %}
+            <a href="{{ pagination.href.next }}">Older</a>
+        {% endif %}
+        {% if pagination.href.previous %}
+            <a href="{{ pagination.href.previous }}">Newer</a>
+        {% endif %}
+    </nav>
+    {% endif %}
+</main>