diff --git a/vendor/benchmark.js/benchmark.js b/vendor/benchmark.js/benchmark.js
index cb22503df..48dab5a6f 100644
--- a/vendor/benchmark.js/benchmark.js
+++ b/vendor/benchmark.js/benchmark.js
@@ -118,7 +118,7 @@
     // Avoid issues with some ES3 environments that attempt to use values, named
     // after built-in constructors like `Object`, for the creation of literals.
     // ES5 clears this up by stating that literals must use built-in constructors.
-    // See http://es5.github.com/#x11.1.5.
+    // See http://es5.github.io/#x11.1.5.
     context = context ? _.defaults(window.Object(), context, _.pick(window, contextProps)) : window;
 
     /** Native constructor references */
@@ -131,8 +131,8 @@
         String = context.String;
 
     /** Used for `Array` and `Object` method references */
-    var arrayRef = Array(),
-        objectRef = Object();
+    var arrayRef = [],
+        objectProto = Object.prototype;
 
     /** Native method shortcuts */
     var abs = Math.abs,
@@ -147,7 +147,7 @@
         shift = arrayRef.shift,
         slice = arrayRef.slice,
         sqrt = Math.sqrt,
-        toString = objectRef.toString;
+        toString = objectProto.toString;
 
     /** Detect DOM document object */
     var doc = isHostType(context, 'document') && context.document;
@@ -704,20 +704,20 @@
      * A helper function for setting options/event handlers.
      *
      * @private
-     * @param {Object} bench The benchmark instance.
+     * @param {Object} object The benchmark or suite instance.
      * @param {Object} [options={}] Options object.
      */
-    function setOptions(bench, options) {
-      options = _.extend({}, bench.constructor.options, options);
-      bench.options = _.forOwn(options, function(value, key) {
+    function setOptions(object, options) {
+      options = _.extend({}, object.constructor.options, options);
+      object.options = _.forOwn(options, function(value, key) {
         if (value != null) {
           // add event listeners
           if (/^on[A-Z]/.test(key)) {
             _.each(key.split(' '), function(key) {
-              bench.on(key.slice(2).toLowerCase(), value);
+              object.on(key.slice(2).toLowerCase(), value);
             });
-          } else if (!_.has(bench, key)) {
-            bench[key] = cloneDeep(value);
+          } else if (!_.has(object, key)) {
+            object[key] = cloneDeep(value);
           }
         }
       });
diff --git a/vendor/underscore/test/arrays.js b/vendor/underscore/test/arrays.js
index 97fdb8779..3306581ad 100644
--- a/vendor/underscore/test/arrays.js
+++ b/vendor/underscore/test/arrays.js
@@ -107,6 +107,8 @@ $(document).ready(function() {
     equal(_(stooges).intersection(leaders).join(''), 'moe', 'can perform an OO-style intersection');
     var result = (function(){ return _.intersection(arguments, leaders); })('moe', 'curly', 'larry');
     equal(result.join(''), 'moe', 'works on an arguments object');
+    var theSixStooges = ['moe', 'moe', 'curly', 'curly', 'larry', 'larry'];
+    equal(_.intersection(theSixStooges, leaders).join(''), 'moe', 'returns a duplicate-free array');
   });
 
   test("union", function() {
diff --git a/vendor/underscore/test/collections.js b/vendor/underscore/test/collections.js
index 230b08fa2..f8796db14 100644
--- a/vendor/underscore/test/collections.js
+++ b/vendor/underscore/test/collections.js
@@ -274,6 +274,12 @@ $(document).ready(function() {
     deepEqual(result, {a: 1, b: 2});
     result = _.findWhere(list, {b: 4});
     deepEqual(result, {a: 1, b: 4});
+
+    result = _.findWhere(list, {c:1})
+    ok(_.isUndefined(result), "undefined when not found");
+
+    result = _.findWhere([], {c:1});
+    ok(_.isUndefined(result), "undefined when searching empty list");
   });
 
   test('max', function() {
diff --git a/vendor/underscore/test/functions.js b/vendor/underscore/test/functions.js
index 90843afa1..1199038eb 100644
--- a/vendor/underscore/test/functions.js
+++ b/vendor/underscore/test/functions.js
@@ -159,14 +159,14 @@ $(document).ready(function() {
   asyncTest("throttle repeatedly with results", 6, function() {
     var counter = 0;
     var incr = function(){ return ++counter; };
-    var throttledIncr = _.throttle(incr, 64);
+    var throttledIncr = _.throttle(incr, 100);
     var results = [];
     var saveResult = function() { results.push(throttledIncr()); };
     saveResult(); saveResult();
-    _.delay(saveResult, 32);
-    _.delay(saveResult, 80);
-    _.delay(saveResult, 96);
-    _.delay(saveResult, 144);
+    _.delay(saveResult, 50);
+    _.delay(saveResult, 150);
+    _.delay(saveResult, 160);
+    _.delay(saveResult, 230);
     _.delay(function() {
       equal(results[0], 1, "incr was called once");
       equal(results[1], 1, "incr was throttled");
@@ -175,7 +175,7 @@ $(document).ready(function() {
       equal(results[4], 2, "incr was throttled");
       equal(results[5], 3, "incr was called trailing");
       start();
-    }, 192);
+    }, 300);
   });
 
   asyncTest("throttle triggers trailing call when invoked repeatedly", 2, function() {