extended irssi bindings

keyboard = (
  { key = "meta-p"; id = "change_window"; data = "20"; },
  { key = "meta-a"; id = "change_window"; data = "21"; },
  { key = "meta-s"; id = "change_window"; data = "22"; },
  { key = "meta-d"; id = "change_window"; data = "23"; },
  { key = "meta-f"; id = "change_window"; data = "24"; },
  { key = "meta-g"; id = "change_window"; data = "25"; },
  { key = "meta-h"; id = "change_window"; data = "26"; },
  { key = "meta-j"; id = "change_window"; data = "27"; },
  { key = "meta-k"; id = "change_window"; data = "28"; },
  { key = "meta-l"; id = "change_window"; data = "29"; },
  { key = "meta-z"; id = "change_window"; data = "30"; },
  { key = "meta-x"; id = "change_window"; data = "31"; },
  { key = "meta-c"; id = "change_window"; data = "32"; },
  { key = "meta-v"; id = "change_window"; data = "33"; },
   { key = "meta-b"; id = "change_window"; data = "34"; },
  { key = "meta-n"; id = "change_window"; data = "35"; },
  { key = "meta-m"; id = "change_window"; data = "36"; },
  { key = "meta-Q"; id = "change_window"; data = "37"; },
  { key = "meta-W"; id = "change_window"; data = "38"; },
  { key = "meta-E"; id = "change_window"; data = "39"; },
  { key = "meta-R"; id = "change_window"; data = "40"; },
  { key = "meta-T"; id = "change_window"; data = "41"; },
  { key = "meta-Z"; id = "change_window"; data = "42"; },
  { key = "meta-U"; id = "change_window"; data = "43"; },
  { key = "meta-I"; id = "change_window"; data = "44"; },
  { key = "meta-O"; id = "change_window"; data = "45"; },
  { key = "meta-P"; id = "change_window"; data = "46"; },
  { key = "meta-A"; id = "change_window"; data = "47"; },
  { key = "meta-S"; id = "change_window"; data = "48"; },
  { key = "meta-D"; id = "change_window"; data = "49"; },
  { key = "meta-F"; id = "change_window"; data = "50"; },
  { key = "meta-G"; id = "change_window"; data = "51"; },
  { key = "meta-H"; id = "change_window"; data = "52"; },
  { key = "meta-J"; id = "change_window"; data = "53"; },
  { key = "meta-K"; id = "change_window"; data = "54"; },
  { key = "meta-L"; id = "change_window"; data = "55"; },
  { key = "meta-Y"; id = "change_window"; data = "56"; },
  { key = "meta-X"; id = "change_window"; data = "57"; },
  { key = "meta-C"; id = "change_window"; data = "58"; },
  { key = "meta-V"; id = "change_window"; data = "59"; },
  { key = "meta-B"; id = "change_window"; data = "60"; },
  { key = "meta-N"; id = "change_window"; data = "61"; },
  { key = "meta-M"; id = "change_window"; data = "62"; }
);