Format of ChanList

array {
  [<lowercase channame>]=>
  array {
    [0]=>
    array {
      [<mode>] => true,
      [<mode>] => true,
      [<mode>] => "<arg>",
      ...
    }
    [1]=>
    array {
      [<UserNumeric>] => "",
      [<UserNumeric>] => "v",
      [<UserNumeric>] => "v",
      [<UserNumeric>] => "o",
      [<UserNumeric>] => "ov",
      ...
    }
    [2]=>
    array {
      [<banmask>] => true,
      [<banmask>] => true,
      ...
    }
    [3]=> "<topic>"
    [4]=> <creationtime>
    [5]=> "<channame>"
  }
}