Constant css_rel_preload::CSS_REL_PRELOAD

pub const CSS_REL_PRELOAD: &'static str = "!function(n){\"use strict\";n.loadCSS||(n.loadCSS=function(){});var o=loadCSS.relpreload={};if(o.support=function(){var e;try{e=n.document.createElement(\"link\").relList.supports(\"preload\")}catch(t){e=!1}return function(){return e}}(),o.bindMediaToggle=function(t){var e=t.media||\"all\";function a(){t.media=e}t.addEventListener?t.addEventListener(\"load\",a):t.attachEvent&&t.attachEvent(\"onload\",a),setTimeout(function(){t.rel=\"stylesheet\",t.media=\"only x\"}),setTimeout(a,3e3)},o.poly=function(){if(!o.support())for(var t=n.document.getElementsByTagName(\"link\"),e=0;e<t.length;e++){var a=t[e];\"preload\"!==a.rel||\"style\"!==a.getAttribute(\"as\")||a.getAttribute(\"data-loadcss\")||(a.setAttribute(\"data-loadcss\",!0),o.bindMediaToggle(a))}},!o.support()){o.poly();var t=n.setInterval(o.poly,500);n.addEventListener?n.addEventListener(\"load\",function(){o.poly(),n.clearInterval(t)}):n.attachEvent&&n.attachEvent(\"onload\",function(){o.poly(),n.clearInterval(t)})}\"undefined\"!=typeof exports?exports.loadCSS=loadCSS:n.loadCSS=loadCSS}(\"undefined\"!=typeof global?global:this);"

Include the CSS preload script.