Adding CustomEvent polyfill.

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "seamless",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "homepage": "https://github.com/travist/seamless.js",
   "authors": [
     "Travis Tidwell <travis@form.io>"

build/seamless.parent.js

@@ -437,6 +437,51 @@ var NO_JQUERY = {};
  **/
 if (! ("JSON" in window && window.JSON)){JSON={}}(function(){function f(n){return n<10?"0"+n:n}if(typeof Date.prototype.toJSON!=="function"){Date.prototype.toJSON=function(key){return this.getUTCFullYear()+"-"+f(this.getUTCMonth()+1)+"-"+f(this.getUTCDate())+"T"+f(this.getUTCHours())+":"+f(this.getUTCMinutes())+":"+f(this.getUTCSeconds())+"Z"};String.prototype.toJSON=Number.prototype.toJSON=Boolean.prototype.toJSON=function(key){return this.valueOf()}}var cx=/[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,escapable=/[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,gap,indent,meta={"\b":"\\b","\t":"\\t","\n":"\\n","\f":"\\f","\r":"\\r",'"':'\\"',"\\":"\\\\"},rep;function quote(string){escapable.lastIndex=0;return escapable.test(string)?'"'+string.replace(escapable,function(a){var c=meta[a];return typeof c==="string"?c:"\\u"+("0000"+a.charCodeAt(0).toString(16)).slice(-4)})+'"':'"'+string+'"'}function str(key,holder){var i,k,v,length,mind=gap,partial,value=holder[key];if(value&&typeof value==="object"&&typeof value.toJSON==="function"){value=value.toJSON(key)}if(typeof rep==="function"){value=rep.call(holder,key,value)}switch(typeof value){case"string":return quote(value);case"number":return isFinite(value)?String(value):"null";case"boolean":case"null":return String(value);case"object":if(!value){return"null"}gap+=indent;partial=[];if(Object.prototype.toString.apply(value)==="[object Array]"){length=value.length;for(i=0;i<length;i+=1){partial[i]=str(i,value)||"null"}v=partial.length===0?"[]":gap?"[\n"+gap+partial.join(",\n"+gap)+"\n"+mind+"]":"["+partial.join(",")+"]";gap=mind;return v}if(rep&&typeof rep==="object"){length=rep.length;for(i=0;i<length;i+=1){k=rep[i];if(typeof k==="string"){v=str(k,value);if(v){partial.push(quote(k)+(gap?": ":":")+v)}}}}else{for(k in value){if(Object.hasOwnProperty.call(value,k)){v=str(k,value);if(v){partial.push(quote(k)+(gap?": ":":")+v)}}}}v=partial.length===0?"{}":gap?"{\n"+gap+partial.join(",\n"+gap)+"\n"+mind+"}":"{"+partial.join(",")+"}";gap=mind;return v}}if(typeof JSON.stringify!=="function"){JSON.stringify=function(value,replacer,space){var i;gap="";indent="";if(typeof space==="number"){for(i=0;i<space;i+=1){indent+=" "}}else{if(typeof space==="string"){indent=space}}rep=replacer;if(replacer&&typeof replacer!=="function"&&(typeof replacer!=="object"||typeof replacer.length!=="number")){throw new Error("JSON.stringify")}return str("",{"":value})}}if(typeof JSON.parse!=="function"){JSON.parse=function(text,reviver){var j;function walk(holder,key){var k,v,value=holder[key];if(value&&typeof value==="object"){for(k in value){if(Object.hasOwnProperty.call(value,k)){v=walk(value,k);if(v!==undefined){value[k]=v}else{delete value[k]}}}}return reviver.call(holder,key,value)}cx.lastIndex=0;if(cx.test(text)){text=text.replace(cx,function(a){return"\\u"+("0000"+a.charCodeAt(0).toString(16)).slice(-4)})}if(/^[\],:{}\s]*$/.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,"@").replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,"]").replace(/(?:^|:|,)(?:\s*\[)+/g,""))){j=eval("("+text+")");return typeof reviver==="function"?walk({"":j},""):j}throw new SyntaxError("JSON.parse")}}}());
 
+// Polyfill for creating CustomEvents on IE9/10/11
+
+// code pulled from:
+// https://github.com/d4tocchini/customevent-polyfill
+// https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent#Polyfill
+
+try {
+    var ce = new window.CustomEvent('test');
+    ce.preventDefault();
+    if (ce.defaultPrevented !== true) {
+        // IE has problems with .preventDefault() on custom events
+        // http://stackoverflow.com/questions/23349191
+        throw new Error('Could not prevent default');
+    }
+} catch(e) {
+  var CustomEvent = function(event, params) {
+    var evt, origPrevent;
+    params = params || {
+      bubbles: false,
+      cancelable: false,
+      detail: undefined
+    };
+
+    evt = document.createEvent("CustomEvent");
+    evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail);
+    origPrevent = evt.preventDefault;
+    evt.preventDefault = function () {
+      origPrevent.call(this);
+      try {
+        Object.defineProperty(this, 'defaultPrevented', {
+          get: function () {
+            return true;
+          }
+        });
+      } catch(e) {
+        this.defaultPrevented = true;
+      }
+    };
+    return evt;
+  };
+
+  CustomEvent.prototype = window.Event.prototype;
+  window.CustomEvent = CustomEvent; // expose definition to window
+}
+
 (function(window, document) {
   'use strict';
   // Base seamless functionality between parent and child.