Bump to v4.0.0.

upperCase.js

@@ -0,0 +1,27 @@
+define(['./internal/createCompounder'], function(createCompounder) {
+
+  /**
+   * Converts `string`, as space separated words, to upper case.
+   *
+   * @static
+   * @memberOf _
+   * @category String
+   * @param {string} [string=''] The string to convert.
+   * @returns {string} Returns the upper cased string.
+   * @example
+   *
+   * _.upperCase('--foo-bar');
+   * // => 'FOO BAR'
+   *
+   * _.upperCase('fooBar');
+   * // => 'FOO BAR'
+   *
+   * _.upperCase('__foo_bar__');
+   * // => 'FOO BAR'
+   */
+  var upperCase = createCompounder(function(result, word, index) {
+    return result + (index ? ' ' : '') + word.toUpperCase();
+  });
+
+  return upperCase;
+});