id summary reporter owner description type status priority milestone component version severity resolution keywords cc focuses 30181 Add more Underscore.js array methods to wp.customize.Values and re-use _ for Customizer JS methods westonruter "Now that the Customizer explicitly uses Underscores.js (#26061), we should re-use Underscore.js as much as possible to eliminate duplicated logic, and to flesh out our Customizer models to have an API consistent with Backbone models. This depends on having QUnit tests (#28579)." task (blessed) new lowest Future Release Customize 3.4 normal needs-patch javascript