Issues in 0.5.1

I am having lots of issues in 0.5.1 not working

wp-content/plugins/guild-armory-roster/WoWArmoryTable.php:295
$lang is undefined

wp-content/plugins/guild-armory-roster/WoWArmoryTable.php:364
lang is hard coded to de_DE

wp-content/plugins/guild-armory-roster/WoWArmoryTable.php:395
$guild is not used

wp-content/plugins/guild-armory-roster/WoWArmoryTable.php:408
$members could be null, need a check before you try foreach on it

wp-content/plugins/guild-armory-roster/WoWArmoryTable.php:463
$raids could be null

wp-content/plugins/guild-armory-roster/WoWArmoryTable.php:468
$bosses could be null
$boss is not used

wp-content/plugins/guild-armory-roster/WoWArmoryTable.php:493
$args is not used

Lastly, and I can tell this is leftover from the older version
Class methods should be declared with an access modifier

I suggest making a method like this

function getLang($lang) {
    return empty($lang) ? get_locale() : $lang;
}

and using $this->getLang() or $this->getLang($lang) whenever you need the language string