Bump to v4.0.0.

internal/basePickBy.js

@@ -0,0 +1,22 @@
+define(['./baseForIn'], function(baseForIn) {
+
+  /**
+   * The base implementation of  `_.pickBy` without support for iteratee shorthands.
+   *
+   * @private
+   * @param {Object} object The source object.
+   * @param {Function} predicate The function invoked per property.
+   * @returns {Object} Returns the new object.
+   */
+  function basePickBy(object, predicate) {
+    var result = {};
+    baseForIn(object, function(value, key) {
+      if (predicate(value)) {
+        result[key] = value;
+      }
+    });
+    return result;
+  }
+
+  return basePickBy;
+});