[1.2.4] Update keila to 0.30.3 Full Changelog Campaign ID is now available as {{ campaign.id }} in email templates (implements #559, thanks @Phobetor) New MAILER_SMTP_TLS_MODE and MAILER_SMTP_AUTH_METHOD environment variables for configuring TLS/STARTTLS and authentication method for the system mailer fixes #536 and #554, thanks @castellinosviluppo and @saz for reporting) Shift+Enter now creates a line break instead of a new paragraph in the block editor Added cache for parsing Liquid templates, significantly improving campaign render performance, especially for campaigns with large HTML bodies Improved speed for many queries in large projects such as campaign stats and contact counts Deleting contacts by external_id from the API now works correctly (fixes #548, thanks @castellinosviluppo for reporting and @JoeJoeflyn for implementing) Fixed the Resend verification email button on the sender edit page Fixed MJML error messages caused by CRLF line breaks (fixes #567, thanks @Twilight-Computer for reporting)