incrementing version, updating changelog, added missing phpdoc comments

js/zerobin.js

@@ -6,7 +6,7 @@
  * @link      http://sebsauvage.net/wiki/doku.php?id=php:zerobin
  * @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
  * @license   http://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
- * @version   0.21.1
+ * @version   0.22
  */
 
 'use strict';
@@ -583,7 +583,7 @@ $(function() {
                     helper.urls2links(this.clearText);
                     helper.urls2links(this.prettyPrint);
                     this.clearText.addClass('hidden');
-                    if (format == 'plaintext') 
+                    if (format == 'plaintext')
                     {
                         this.prettyPrint.css('white-space', 'pre-wrap');
                         this.prettyPrint.css('word-break', 'normal');