5.0.0

This is mostly a release to modernise the internal code in the library, with some fixes and potentially breaking changes.

• The minimum supported PHP version is now 7.4
• The minimum officially supported version of WordPress is now 5.6
• An admin column custom callback function now receives the WP_Post object as its first parameter (use this instead of the $post global) - #135
• Internal PHP classes were namespaced and renamed which means you may need to update any strictly typed parameters when using the ext-cpts/* or ext-taxos/* actions - See https://github.com/johnbillion/extended-cpts/wiki/Available-filters-and-actions for details
• Post types are now included in the Recently Published dashboard section by default (dashboard_activity argument) - #163
• Potentially incorrectly displayed dates for admin columns that use date_format have been fixed - #105
• New actions were introduced: ext-cpts/{post_type}/admin-instance and ext-taxos/{taxonomy}/admin-instance - #166