* Added: better compliance with Laravel 8, ready to upgrade

 * Added: upgrade to Laravel 7, the required PHP version is now 7.2.5 or higher

 * Added: upgrade to Carbon 2

 * Added: refined automation UI

 * Added: updated GeoIP dataset

 * Added: multiple payment options supported

 * Added: mass assign values to custom fields

 * Added: more PRO builder widgets

 * Added: more campaign setup options

 * Added: improved sending domain verification process

 * Added: plugin mechanism now allows hooking into the core application

 * Added: better PHP CLI detection

 * Added: file manager is now supported in PRO builder

 * Added: user's space for storing assets

 * Added: more plan setup options

 * Added: easier form generation options

 * Added: more unsubscription options

4.0.23 / 2021-05-10
==================
 * Added: plugin mechanism 1.0 is now available, embracing plugin development
 * Added: more widgets for PRO builder
 * Added: one-time login token generation (via API)
 * Fixed: better SSL detection for shared hosting environment
 * Fixed: better multi-process support & detection
 * Fixed: faster authentication process
 * Fixed: fixed Chrome browser glithes
 * Fixed: better compatibility with PHP 7.4
 * Fixed: better compatibility with different types of HTML email templates
 * Fixed: email builder not working with legacy versions of Internet Explorer
 * Fixed: better AWS bounce/feedback handling
 * Fixed: sending domain verification not working properly with certain DNS providers
 * Fixed: faster web page load in general
 * Fixed: upgrade issue from version 3x to 4x
 * Fixed: performance issue on servers with limited memory
 * Fixed: performance issue with certain types of PCNTL setup
 * Fixed: email builder not working well with SVG
 * Fixed: better compatibility with older versions of Thunderbird