* Fixed: issue with automation for subscriber events
* Fixed: automation follow-up email not triggered in certain cases
* Fixed: incorrect quota counting in certain cases
* Fixed: cannot subscribe customer to a plan as administrator
* Fixed: prevent double subscription
* Fixed: check to make sure public/ folder is writable while installing
* Changed: queued campaign is now of QUEUED status (READY is no longer used)
* Changed: SMTP encryption is no longer a required field
* Changed: remove GMP extension validation as it is no longer required