PHPMailer/PHPMailer — pull request #338 by alfupe (2014-12-26 18:08:27+00:00)
Title: Update EasyPeasyICS.php

Updated method addEvent() to accept the UID from the parameter.
Updated method render to use $event["uid"] instead of md5(uniqid(mt_rand(), true)) as the UID value.
All these changes are useful if what you want is to control the create or update an existing event from the application logic and not always forcing the creation of a new event.