Bump to v3.0.0.

internal/mapDelete.js

@@ -0,0 +1,17 @@
+define([], function() {
+
+  /**
+   * Removes `key` and its value from the cache.
+   *
+   * @private
+   * @name delete
+   * @memberOf _.memoize.Cache
+   * @param {string} key The key of the value to remove.
+   * @returns {boolean} Returns `true` if the entry was removed successfully, else `false`.
+   */
+  function mapDelete(key) {
+    return this.has(key) && delete this.__data__[key];
+  }
+
+  return mapDelete;
+});