Update changelog and copyright year

CHANGELOG

@@ -39,11 +39,15 @@ CHANGELOG Roundcube Webmail
 - Fix touch event issue on messages list in IE/Edge (#5781)
 - Fix so links over images are not removed in plain text signatures converted from HTML (#4473)
 - Fix various issues when downloading files with names containing non-ascii chars, use RFC 2231 (#5772)
+
+RELEASE 1.3.1
+-------------
 - Add Preferences > Mailbox View > Main Options > Layout (#5829)
 - Password: Fix compatibility with PHP 7+ in cpanel_webmail driver (#5820)
 - Managesieve: Fix parsing dot-staffed lines in multiline text (#5838)
 - Managesieve: Fix AM/PM suffix in vacation time selectors
 - Managesieve: Fix bug where 'exists' operator was reset to 'contains' (#5899)
+- Remove non-printable characters from filenames on download/display (#5880)
 - Fix decoding non-ascii attachment names from TNEF attachments (#5646, #5799)
 - Fix uninitialized string offset in rcube_utils::bin2ascii() and make sure rcube_utils::random_bytes() result has always requested length (#5788)
 - Fix bug where HTML messages with @media styles could moddify style of page body (#5811)

skins/classic/templates/about.html

@@ -20,7 +20,7 @@
 <div id="license">
 <roundcube:object name="aboutcontent" />
 <h2 class="sysname">Roundcube Webmail <roundcube:object name="version" /></h2>
-<p class="copyright">Copyright &copy; 2005-2016, The Roundcube Dev Team</p>
+<p class="copyright">Copyright &copy; 2005-2017, The Roundcube Dev Team</p>
 <p class="license">This program is free software; you can redistribute it and/or modify
 it under the terms of the <a href="http://www.gnu.org/licenses/gpl.html" target="_blank">GNU General Public License</a>
 as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.<br/>

skins/larry/templates/about.html

@@ -10,7 +10,7 @@
 <roundcube:object name="aboutcontent" />
 
 <h2 class="sysname">Roundcube Webmail <roundcube:object name="version" /></h2>
-<p class="copyright">Copyright &copy; 2005-2016, The Roundcube Dev Team</p>
+<p class="copyright">Copyright &copy; 2005-2017, The Roundcube Dev Team</p>
 <p class="license">This program is free software; you can redistribute it and/or modify
 it under the terms of the <a href="http://www.gnu.org/licenses/gpl.html" target="_blank">GNU General Public License</a>
 as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.<br/>