Bump to v4.7.0.

meanBy.js

@@ -0,0 +1,32 @@
+define(['./_baseIteratee', './_baseMean'], function(baseIteratee, baseMean) {
+
+  /**
+   * This method is like `_.mean` except that it accepts `iteratee` which is
+   * invoked for each element in `array` to generate the value to be averaged.
+   * The iteratee is invoked with one argument: (value).
+   *
+   * @static
+   * @memberOf _
+   * @since 4.7.0
+   * @category Math
+   * @param {Array} array The array to iterate over.
+   * @param {Array|Function|Object|string} [iteratee=_.identity]
+   *  The iteratee invoked per element.
+   * @returns {number} Returns the mean.
+   * @example
+   *
+   * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
+   *
+   * _.meanBy(objects, function(o) { return o.n; });
+   * // => 5
+   *
+   * // The `_.property` iteratee shorthand.
+   * _.meanBy(objects, 'n');
+   * // => 5
+   */
+  function meanBy(array, iteratee) {
+    return baseMean(array, baseIteratee(iteratee));
+  }
+
+  return meanBy;
+});