= 5.5.5 =
* Prepare for 6.0 release with upgrade notice, disabling auto updates for 6.0, and code preparation to prevent conflicts between major versions
= 5.5.4 =
* New: option to install required free plugin from pro
* Improvement: no upgrade insecure requests network wide on per site activated sites
* Improvement: removing CSP rules
* Improvement: upgrade .htaccess http headers to advanced-headers.php
* Improvement: use manage_security capability
* Improvement: extend system status with versions of both free and premium
* Improvement: catch situation where pro is deactivated while free not active
