Class: Override the ‘Walker_Category_Checklist’ method, ‘start_el’, to replace checkboxes with radio buttons.
Class: Autoloader class.
Class: Checkout Step class
Class: Allows for the optional creation of a tabbed page, or the insertion of a tab into a different page.
Class: Shows the orders the current post is connected with
Class: Helps define currencies, their display preferences, and presenting price and currency information.
Class: Current Checkout class