Bump to v4.0.0.

initial.js

@@ -0,0 +1,21 @@
+define(['./dropRight'], function(dropRight) {
+
+  /**
+   * Gets all but the last element of `array`.
+   *
+   * @static
+   * @memberOf _
+   * @category Array
+   * @param {Array} array The array to query.
+   * @returns {Array} Returns the slice of `array`.
+   * @example
+   *
+   * _.initial([1, 2, 3]);
+   * // => [1, 2]
+   */
+  function initial(array) {
+    return dropRight(array, 1);
+  }
+
+  return initial;
+});