This files describes API changes in /message/ messaging system,
information provided here is intended especially for developers.

=== 2.2 ===

required changes:
* lib/messagelib.php message_send($eventdata)
  $eventdata->userto should contain a property called "emailstop", $eventdata->userto->emailstop
  If it is absent it will be retrieved from the user table causing an additional database query
