mod_pubsub_subscription: New module providing an API for pubsub subscriptions This lets other modules hook events from local or remote XEP-0060 pubsub services. API allows keeping track of items added, removed or if the whole node gets cleared or even deleted. Requested by MattJ.

<tr>
  <th>What is {x} {op} {y}?</th><td>
    <input name="captcha_challenge" type="hidden" value="{challenge}">
    <input name="captcha_reply" pattern="[0-9]+" required type="number">
  </td></tr>