* Adapted code to work with PHP 7.
* Minor optimizations.
* Optimized protection against spam bots.
* Replaced mysql_result function with mysql_fetch_row.
* View message subject in page title.
* Added patch for possible XSS.
* Overlong links won't be removed anymore if links are enabled, but they will be cut to the
allowed word length. On mouse-over the whole link will appear as tooltip.
* Updated UBB codes.
* Added patch for possible XSS in UBB codes.
* Fixed MySQL error that occurred when database was empty.
* Added support for multibyte characters.