What's new in 3.1:

*) fixed wireless reassociation issue;
*) added support for Novatel Wireless Merlin XU870;
*) added support for nForce Ethernet cards;
*) fixed bug - user manager database in-use counter was wrong
     for database size over 21 MB;
*) console - fixed parsing of alphabetical operators ('and', 'or', 'in') in
    expression context, this also fixes default configuration revert script;
*) fixed TKIP on RB300 and RB600;
*) fixed ipv6 firewall connection-state matcher;
*) improved WinBox connection speed & memory usage;
*) report correct tcp-state for firewall connections;
*) fixed ppp user names in ip accounting;
*) fixed via vt6122 (rb600 ether3) driver: multicast packet receiving
   did not work properly;
*) user manager - voucher template supports kb/mb/gb for
    download/upload/transfer limit values;
*) added ":led user-led=[yes|no]" command for RB100/RB400/RB500 series;