* Fixed: default template missing
* Fixed: users cannot add custom sending identities
* Fixed: translation missing
* Fixed: SendGrid subaccount issue
* Fixed: PayPal integration error while checking out
* Fixed: click tracking error for Automation
* Fixed: Pro builder loading performance
* Fixed: SPF cannot be verified
* Fixed: translation cache issue
* Added: upgrade to Laravel 5.8 (current 5.5)
* Added: minimum PHP version required is now 7.1.3
* Added: send test email for system email
* Added: autofill support for tags
* Added: clean up bare linefeed characters in email
* Added: assign plan to customer support
* Added: reorganization of users assets storage
