v.1.3.1

• Bugfix to not discard response content on errors

v.1.3.0

• Changed to prefer cURL for making HTTP requests.
• PHP version number passed to Premium in user agent.

v.1.2.1

Minor fixes for PHP 8.1 compatibility

v.1.2.0

• Multiple codes can be submitted per registration;
• Periodic time limits for registrations per recipient;

v.1.1.0

• compatibility moved up to 5.5;
• some error messages indicate data unavailability due to GDPR limitations;
• files can be attached to submitted messages for upload and storage in Premium (when required by the campaign)

v.1.0.4

Merge pull request #9 from pilsetnieks/master

Grammar in README