Limit previous talks on talks page, add talks archive

source/talks/archive.twig

@@ -0,0 +1,18 @@
+---
+title: Talk Archive
+layout: page
+use: [talks]
+---
+{% set events = [] %}
+{% for talk in data.talks %}
+    {% for event in talk.events if event.date < 'today'|date('Y-m-d') %}
+        {% set event = event|merge({ talk: talk })|merge(site.events[event.id]) %}
+        {% set events = events|merge([event]) %}
+    {% endfor %}
+{% endfor %}
+
+{% include "talks-table" with {
+    events: events|sortbyfield('date')|reverse,
+    show_feedback: true,
+    show_talk: true
+} %}