Bump to v3.0.0.

internal/charAtCallback.js

@@ -0,0 +1,15 @@
+define([], function() {
+
+  /**
+   * Used by `_.max` and `_.min` as the default callback for string values.
+   *
+   * @private
+   * @param {string} string The string to inspect.
+   * @returns {number} Returns the code unit of the first character of the string.
+   */
+  function charAtCallback(string) {
+    return string.charCodeAt(0);
+  }
+
+  return charAtCallback;
+});