Version 1.3.9

[Improvement] Added the ability to require a reCAPTCHA for notification subscribers

[Improvement] Automatically use the message subject defined in the custom templates if the message_subject parameter is not defined in API requests

[Improvement] Various interface improvements in the Dashboard

[Fix] Remediated an XSS issue for incident and maintenance page views

[Fix] Remediated an XSS issue for managing notification subscriptions

[Fix] Resolved an issue where the metric chart would ignore the configured time zone and only display the times in UTC