Adding es6-promise as a local polyfill for unsupported browsers

package.json

@@ -46,6 +46,7 @@
     "babel-preset-env": "1.6.1",
     "co": "4.6.0",
     "commitplease": "3.1.0",
+    "es6-promise": "^4.2.5",
     "eslint-config-jquery": "1.0.1",
     "eslint-plugin-html": "4.0.1",
     "eslint-plugin-qunit": "3.2.0",
@@ -70,6 +71,7 @@
     "proxyquire": "1.8.0",
     "requirejs": "2.3.5",
     "rollup-plugin-babel": "3.0.2",
+    "rollup-plugin-node-resolve": "^3.4.0",
     "semver": "5.4.1"
   },
   "scripts": {

rollup.config.js

@@ -1,14 +1,14 @@
 /* eslint-env node */
 
 var babel = require( "rollup-plugin-babel" );
+var resolve = require( "rollup-plugin-node-resolve" );
 
 module.exports = {
 	format: "iife",
 	exports: "none",
 	plugins: [
-		babel( {
-			exclude: "node_modules/**"
-		} )
+		resolve( { modulesOnly: true } ),
+		babel()
 	],
 
 	// eslint-disable-next-line no-multi-str

src/core/logging.js

@@ -1,5 +1,6 @@
 import config from "./config";
 import { objectType } from "./utilities";
+import Promise from "../promise";
 
 // Register logging callbacks
 export function registerLoggingCallbacks( obj ) {

src/core/processing-queue.js

@@ -8,6 +8,7 @@ import {
 	runLoggingCallbacks
 } from "./logging";
 
+import Promise from "../promise";
 import {
 	globalSuite
 } from "../core";
@@ -33,7 +34,7 @@ const taskQueue = [];
 function advance() {
 	advanceTaskQueue();
 
-	if ( !taskQueue.length && !config.blocking ) {
+	if ( !taskQueue.length && !config.blocking && !config.current) {
 		advanceTestQueue();
 	}
 }

src/promise.js

@@ -0,0 +1,3 @@
+import _Promise from "es6-promise/lib/es6-promise";
+
+export default typeof Promise !== "undefined" ? Promise : _Promise;

src/test.js

@@ -4,6 +4,7 @@ import { begin } from "./core";
 import { setTimeout, clearTimeout } from "./globals";
 import { emit } from "./events";
 import Assert from "./assert";
+import Promise from "./promise";
 
 import config from "./core/config";
 import {