Added

• Added: Diagnostics endpoints to generate dumps and gcdumps.
• Added: Fullscreen button for template editing.
• Emails: Unsubscribe screen for emails.
• Integrations: WhatsApp support for messaging channel.
• Notifications: Template variants: Choose a template by probability.
• Testing: Added verify to the API tests.
• Testing: Automated API testing with Google PubSub.
• UI: Better detail view for notifications.
• UI: Show last notification per user.

Changed

• Backend: Hotfix for a memory leak introduced by XML comments in OpenAPI.
• Messaging: Better implementation for messaing solutions with test coverage.
• Notifications: Reworked the notification rpeferences.
• UI: Better UI for template management.