Updating trim() polyfill. According to mdn: https://github.com/mdn/co…

…ntent/blob/cf607d68522cd35ee7670782d3ee3a361eaef2e4/files/en-us/web/javascript/reference/global_objects/string/trim/index.md

lib/utils.js

@@ -185,7 +185,7 @@ function isURLSearchParams(val) {
  * @returns {String} The String freed of excess whitespace
  */
 function trim(str) {
-  return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');
+  return str.trim ? str.trim() : str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
 }
 
 /**