- Places supervisor/daemon/worker under the new Cron class

- Updates endpoints
- Integrates queue worker with MailPoet mailer
- Fixes script activation check logic

lib/Config/PublicAPI.php

@@ -1,7 +1,7 @@
 <?php
 namespace MailPoet\Config;
 
-use MailPoet\Queue\Daemon;
+use MailPoet\Cron\Daemon;
 use MailPoet\Util\Helpers;
 
 if(!defined('ABSPATH')) exit;