PublishPress Authors Pro 4.7.3

* Fixed: Fix error "Uncaught Error: Call to a member function add_cap() on null", #223;
* Changed: Update base plugin to v3.6.3;

* Fixed: Avoid warnings regarding constants already defined;
* Fixed: Fixed the cache for the get_multiple_authors function for archive pages, #190;
* Fixed: Fixed fatal error Object of class WP_Error could not be converted to string, #182;
* Fixed: Fixed the value for $author->display_name which was returning the value from the user object instead of the custom value set for the author, #183;
* Fixed: Fixed Plugin::filter_user_has_cap() is passing a param to Util::get_current_post_type() which doesn’t support params, #187;
* Fixed: Fixed Plugin::filter_user_has_cap() to use the correct user, not the current one, #186;
* Fixed: Removed leftovers from the deprecated capability: ppma_edit_orphan_post, #193;
* Changed: Updated the base plugin to the v3.5.1;

* Added: Added a new widget to display all the authors, #76;
* Added: Added option to display the username in the authors search field, #162;
* Fixed: Fix compatibility with WooCommerce products, #169;
* Fixed: Performance issue in the frontend. Added cache for queries that can run multiple times in the frontend, #171;
* Fixed: Fix PHP notice on author page when user is not an author, #156;
* Fixed: Fixed notice when a post doesn't exist after deleting the post, #167;
* Changed: Updated base plugin to 3.5.0;