docs: Mark twitter v1 endpoint deprecated, see #86

Author: ralflang

lib/Block/TwitterTimeline.php

@@ -11,6 +11,10 @@
  * @author  Ben Klang <ben@alkaloid.net>
  * @author  Michael J Rubinsky <mrubinsk@horde.org>
  * @package Horde
+ *
+ * @deprecated Uses the defunct Twitter V1 API via OAuth 1.0a. A replacement
+ *             based on Horde\Service\Twitter\V2 (PSR-18) and Horde OAuth2
+ *             is needed.
  */
 
 use Horde\Support\Randomid;

services/twitter/index.php

@@ -12,6 +12,10 @@
  * @category Horde
  * @license  http://www.horde.org/licenses/lgpl LGPL-2
  * @package  Horde
+ *
+ * @deprecated This OAuth 1.0a callback targets the defunct Twitter V1 API.
+ *             A replacement based on Horde\Service\Twitter\V2 (PSR-18) and
+ *             Horde OAuth2 is needed.
  */
 
 use Horde\Util\Util;