upgrade to 3.0

_includes/archive.njk

@@ -0,0 +1,13 @@
+<ul reversed>
+{% for year, yearPosts in collections.postsByYear %}
+	<details><summary>{{ year }}</summary>
+	<ol reversed class="archivelist">
+		{% for post in yearPosts | reverse %}
+			<li class="archivelist-item{% if post.url == url %} archivelist-item-active{% endif %}">
+				<a href="{{ post.url }}" class="archivelist-link">{% if post.data.title %}{{ post.data.title }}{% else %}<code>{{ post.url }}</code>{% endif %}</a><br />
+				<time class="archivelist-date" datetime="{{ post.date | htmlDateString }}">{{ post.date | readableDate("dd LLLL yyyy") }}</time>
+			</li>
+		{% endfor %}
+	</ol></details>
+{% endfor %}
+</ul>