Add 1.3-beta milestone + update copyright year

CHANGELOG

@@ -1,6 +1,8 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+RELEASE 1.3-beta
+----------------
 - Nicely handle contact deletion on contact edit (#5522)
 - vcard_attachments: Add possibility to attach contact vCard to composed message (#4997)
 - Preserve message internal/received date on import in mbox format (#5559)

index.php

@@ -4,7 +4,7 @@
  | Roundcube Webmail IMAP Client                                           |
  | Version 1.3-git                                                         |
  |                                                                         |
- | Copyright (C) 2005-2016, The Roundcube Dev Team                         |
+ | Copyright (C) 2005-2017, The Roundcube Dev Team                         |
  |                                                                         |
  | This program is free software: you can redistribute it and/or modify    |
  | it under the terms of the GNU General Public License (with exceptions   |

program/lib/Roundcube/bootstrap.php

@@ -3,7 +3,7 @@
 /**
  +-----------------------------------------------------------------------+
  | This file is part of the Roundcube PHP suite                          |
- | Copyright (C) 2005-2015, The Roundcube Dev Team                       |
+ | Copyright (C) 2005-2017, The Roundcube Dev Team                       |
  |                                                                       |
  | Licensed under the GNU General Public License version 3 or            |
  | any later version with exceptions for skins & plugins.                |