Update vendors.

vendor/underscore/underscore.js

@@ -1,6 +1,6 @@
 //     Underscore.js 1.8.3
 //     http://underscorejs.org
-//     (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+//     (c) 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 //     Underscore may be freely distributed under the MIT license.
 
 (function() {
@@ -93,7 +93,7 @@
     return _.property(value);
   };
 
-  // An external wrapper for the internal callback generator
+  // An external wrapper for the internal callback generator.
   _.iteratee = function(value, context) {
     return cb(value, context, Infinity);
   };
@@ -504,7 +504,7 @@
     for (var i = 0, length = getLength(input); i < length; i++) {
       var value = input[i];
       if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) {
-        // Flatten current level of array or arguments object
+        // Flatten current level of array or arguments object.
         if (shallow) {
           var j = 0, len = value.length;
           while (j < len) output[idx++] = value[j++];
@@ -592,7 +592,7 @@
   });
 
   // Complement of _.zip. Unzip accepts an array of arrays and groups
-  // each array's elements on shared indices
+  // each array's elements on shared indices.
   _.unzip = function(array) {
     var length = array && _.max(array, getLength).length || 0;
     var result = Array(length);
@@ -622,7 +622,7 @@
     return result;
   };
 
-  // Generator function to create the findIndex and findLastIndex functions
+  // Generator function to create the findIndex and findLastIndex functions.
   var createPredicateIndexFinder = function(dir) {
     return function(array, predicate, context) {
       predicate = cb(predicate, context);
@@ -635,7 +635,7 @@
     };
   };
 
-  // Returns the first index on an array-like that passes a predicate test
+  // Returns the first index on an array-like that passes a predicate test.
   _.findIndex = createPredicateIndexFinder(1);
   _.findLastIndex = createPredicateIndexFinder(-1);
 
@@ -652,7 +652,7 @@
     return low;
   };
 
-  // Generator function to create the indexOf and lastIndexOf functions
+  // Generator function to create the indexOf and lastIndexOf functions.
   var createIndexFinder = function(dir, predicateFind, sortedIndex) {
     return function(array, item, idx) {
       var i = 0, length = getLength(array);
@@ -707,7 +707,7 @@
   };
 
   // Split an **array** into several arrays containing **count** or less elements
-  // of initial array
+  // of initial array.
   _.chunk = function(array, count) {
     if (count == null || count < 1) return [];
 
@@ -723,7 +723,7 @@
   // ------------------
 
   // Determines whether to execute a function as a constructor
-  // or a normal function with the provided arguments
+  // or a normal function with the provided arguments.
   var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) {
     if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
     var self = baseCreate(sourceFunc.prototype);
@@ -959,7 +959,7 @@
   };
 
   // Retrieve the names of an object's own properties.
-  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  // Delegates to **ECMAScript 5**'s native `Object.keys`.
   _.keys = function(obj) {
     if (!_.isObject(obj)) return [];
     if (nativeKeys) return nativeKeys(obj);
@@ -991,8 +991,8 @@
     return values;
   };
 
-  // Returns the results of applying the iteratee to each element of the object
-  // In contrast to _.map it returns an object
+  // Returns the results of applying the iteratee to each element of the object.
+  // In contrast to _.map it returns an object.
   _.mapObject = function(obj, iteratee, context) {
     iteratee = cb(iteratee, context);
     var keys = _.keys(obj),
@@ -1027,7 +1027,7 @@
   };
 
   // Return a sorted list of the function names available on the object.
-  // Aliased as `methods`
+  // Aliased as `methods`.
   _.functions = _.methods = function(obj) {
     var names = [];
     for (var key in obj) {
@@ -1058,11 +1058,11 @@
   // Extend a given object with all the properties in passed-in object(s).
   _.extend = createAssigner(_.allKeys);
 
-  // Assigns a given object with all the own properties in the passed-in object(s)
+  // Assigns a given object with all the own properties in the passed-in object(s).
   // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
   _.extendOwn = _.assign = createAssigner(_.keys);
 
-  // Returns the first key on an object that passes a predicate test
+  // Returns the first key on an object that passes a predicate test.
   _.findKey = function(obj, predicate, context) {
     predicate = cb(predicate, context);
     var keys = _.keys(obj), key;
@@ -1185,7 +1185,7 @@
         return '' + a === '' + b;
       case '[object Number]':
         // `NaN`s are equivalent, but non-reflexive.
-        // Object(NaN) is equivalent to NaN
+        // Object(NaN) is equivalent to NaN.
         if (+a !== +a) return +b !== +b;
         // An `egal` comparison is performed for other numeric values.
         return +a === 0 ? 1 / +a === 1 / b : +a === +b;
@@ -1311,7 +1311,7 @@
 
   // Is a given object a finite number?
   _.isFinite = function(obj) {
-    return isFinite(obj) && !isNaN(parseFloat(obj));
+    return !_.isSymbol(obj) && isFinite(obj) && !isNaN(parseFloat(obj));
   };
 
   // Is the given value `NaN`?
@@ -1420,7 +1420,7 @@
     var escaper = function(match) {
       return map[match];
     };
-    // Regexes for identifying a key that needs to be escaped
+    // Regexes for identifying a key that needs to be escaped.
     var source = '(?:' + _.keys(map).join('|') + ')';
     var testRegexp = RegExp(source);
     var replaceRegexp = RegExp(source, 'g');