Added support for changing single values on registrant fields. If a contact has already information stored in these fields they become read-only, but single fields that are still empty may be set (see paragraph 126.96.36.199 of technical guidelines). Adjusted Contact.php class and update-contact template to allow for these specific operations. Thanks Robin!
An example for this is now available as well.
DOWNLOAD: EPP library IT-NIC (PHP) (925 downloads)