* Add section for PrettyPay™ within the Welcome and Complete steps for in-plugin onboarding
* Add notice of 3% fee to PrettyPay™ Links sub-page for free users
* Add support for ISO encoding when pulling in title from pretty link's target URL
* Fix PHP 8 deprecation warnings
* Fix database error on initial plugin activation
* Fix body class on Pretty Links page not being escaped
* Pro: Add filter hook for invalid response codes in Link Health