Bump to v4.12.0.

_listCacheSet.js

@@ -0,0 +1,26 @@
+define(['./_assocIndexOf'], function(assocIndexOf) {
+
+  /**
+   * Sets the list cache `key` to `value`.
+   *
+   * @private
+   * @name set
+   * @memberOf ListCache
+   * @param {string} key The key of the value to set.
+   * @param {*} value The value to set.
+   * @returns {Object} Returns the list cache instance.
+   */
+  function listCacheSet(key, value) {
+    var data = this.__data__,
+        index = assocIndexOf(data, key);
+
+    if (index < 0) {
+      data.push([key, value]);
+    } else {
+      data[index][1] = value;
+    }
+    return this;
+  }
+
+  return listCacheSet;
+});