Add year headings to event list

templates/index.html

@@ -114,6 +114,13 @@
   <h3>Agenda</h3>
 
   {% for event in events if event.as_date >= last_week %}
+  {% if loop.first or event.date.year != loop.previtem.date.year %}
+  <div class="row mt-2">
+    <div class="col">
+      <h5>{{ event.date.year }}</h5>
+    </div>
+  </div>
+  {% endif %}
   <div class="row border border-1 {% if event.name in class_map %} {{ class_map[event.name]}}{% endif %}">
     <div class="col-md-3">
       {{event.as_date.strftime("%a, %d, %b")}}