6.0.0-rc1

What's Changed

• DEP Dependencies for CMS 6 by @emteknetnz in #572
• DEP Use silverstripe/event-dispatcher ^2 by @emteknetnz in #575
• MNT Dev require recipe-testing by @emteknetnz in #576
• API Set extension hook implementation visibility to protected by @emteknetnz in #586
• DEP Limit PHP support for CMS 6 by @GuySartorelli in #598
• API Standardise extension hooks by @GuySartorelli in #597
• API Replace Extension subclasses by @emteknetnz in #599
• API Migrate code and docs from other modules by @emteknetnz in #596
• DOC Set metadata of docs base by @emteknetnz in #604
• DEP Use PHPUnit 11 by @emteknetnz in #601
• API Use new names for renamed classes by @GuySartorelli in #606
• API Update API to reflect changes to CLI interaction by @GuySartorelli in #600
• ENH Use symfony/validation logic by @GuySartorelli in #609
• API Use SS_List as type by @emteknetnz in #612
• API Explicity mark nullable parameters for PHP 8.4 by @emteknetnz in #614
• MNT Don't test behat from other modules anymore by @GuySartorelli in #615
• DEP Update minimum composer versions by @emteknetnz in #617
• DEP Add conflict with elemental 6.0.0-alpha1 by @emteknetnz in #618
• FIX Stop using deprecated API by @GuySartorelli in #620
• DEP Don't include vendor-plugin as an explicit dependency by @GuySartorelli in #621
• ENH Stop using Controller::has_curr() by @emteknetnz in #626
• MNT Run module-standardiser by @emteknetnz in #627

Full Changelog: 5.3.1...6.0.0-rc1