NEW: [Bootstrapper] ARA builds. [Panel Proxy] support for a singular control panel URL. See @apisnetworks/cp-proxy or Panel proxy.md in the bundled documentation. [PHP] PHP8 support. Enabling PHP8 disables Horde webmail + ionCube features until supported. [PowerDNS] centralized DNS management within UI. Any DNS zone in a cluster may be managed from the UI now regardless of server. [Scopes] php.composer-autoupdate, manage Composer auto updates. virus-scanner.remote-scan, use a centralized ClamAV scanner (see ModSecurity.md). FIXED: [Bootstrapper] "php-fpm" service fires on each notify usage that can result in php-fpm-MAIN as well as other services from deactivating. [File Manager] uploads rejected when diskquota is disabled for site. [Pagespeed] disable gzip compression when Brotli support enabled. Corrects situation in which content compressed using gzip despite client wanting br [PHP-FPM] correct race condition in which PHP-FPM starts in parallel before cgconfig.service cgroup hierarchy is created. [upcp] builds ignored in edge-major. CHANGED: [Frontend] reduce memory usage. [Let's Encrypt] enhance registration reporting errors. Attempt dns-01 solver on root domain when self-check fails. [Let's Encrypt] detection of new R1 signing root. [License] enforce DNS-only domain checks early. [Opcenter] preserve file/inode quotas when diskquota,enabled is disabled. Allows temporary toggles to preserve previous quota settings. [Opcenter] apache,enabled may be disabled. [PHP] allow override of configure script location via "php_configure". [PHP-FPM] write cgroup task only to tracked cgroup controllers. [Scopes] rename apache.php-multi => php.multi, apache.php-version => php.version. Deprecated beginning 3.3 [UI] migrate all application.spec XML files to Yaml. REMOVED: [Postgresql] 9.6 support on CentOS 8. [System] sssd service.