{#
  The whole thread. Returned after a rewind, which changes an arbitrary number
  of messages at once -- replacing the lot is simpler and less error-prone than
  working out which individual bubbles to remove. Also included by
  chat/index.html, so the conversation is described in exactly one place.

  Deliberately has no root element: it is swapped with innerHTML into #thread,
  and an outerHTML swap would take the container with it.
#}
{% for message in messages %}
  {% with body_html = bodies.get(message.id, "") %}
    {% include "chat/_message.html" %}
  {% endwith %}
{% endfor %}