old_contents: RACE = {
      1: 'Human',
      2: 'Orc',
      3: 'Dwarf',
      4: 'Night Elf',
      5: 'Undead',
      6: 'Tauren',
      7: 'Gnome',
      8: 'Troll',
      9: 'Goblin',
      10: 'Blood Elf',
      11: 'Draenei',
      22: 'Worgen',
      24: 'Pandaren',
      25: 'Pandaren',
      26: 'Pandaren',
  }
  
  CLASS = {
      1: 'Warrior',
      2: 'Paladin',
      3: 'Hunter',
      4: 'Rogue',
      5: 'Priest',
      6: 'Death Knight',
      7: 'Shaman',
      8: 'Mage',
      9: 'Warlock',
      10: 'Monk',
      11: 'Druid',
  }
  
  QUALITY = {
      1: 'Common',
      2: 'Uncommon',
      3: 'Rare',
      4: 'Epic',
      5: 'Legendary',
      6: 'Artifact',
      7: 'Heirloom',
  }
  
  RACE_TO_FACTION = {
      1: 'Alliance',
      2: 'Horde',
      3: 'Alliance',
      4: 'Alliance',
      5: 'Horde',
      6: 'Horde',
      7: 'Alliance',
      8: 'Horde',
      9: 'Horde',
      10: 'Horde',
      11: 'Alliance',
      22: 'Alliance',
      24: '?',
      25: 'Alliance',
      26: 'Horde',
  }
  
  EXPANSION = {
      0: ('wow', 'World of Warcraft'),
      1: ('bc', 'The Burning Crusade'),
      2: ('lk', 'Wrath of the Lich King'),
      3: ('cata', 'Cataclysm'),
      4: ('mop', 'Mists of Pandaria'),
      5: ('wod', 'Warlords of Draenor'),
  }
  
  RAIDS = {
      'wow': (2717, 2677, 3429, 3428),
      'bc': (3457, 3836, 3923, 3607, 3845, 3606, 3959, 4075),
      'lk': (4603, 3456, 4493, 4500, 4273, 2159, 4722, 4812, 4987),
      'cata': (5600, 5094, 5334, 5638, 5723, 5892),
      'mop': (6125, 6297, 6067, 6622, 6738),
      'wod': (6996, 6967),
  }
  
new_contents: RACE = {
      1: 'Human',
      2: 'Orc',
      3: 'Dwarf',
      4: 'Night Elf',
      5: 'Undead',
      6: 'Tauren',
      7: 'Gnome',
      8: 'Troll',
      9: 'Goblin',
      10: 'Blood Elf',
      11: 'Draenei',
      22: 'Worgen',
      24: 'Pandaren',
      25: 'Pandaren',
      26: 'Pandaren',
  }
  
  CLASS = {
      1: 'Warrior',
      2: 'Paladin',
      3: 'Hunter',
      4: 'Rogue',
      5: 'Priest',
      6: 'Death Knight',
      7: 'Shaman',
      8: 'Mage',
      9: 'Warlock',
      10: 'Monk',
      11: 'Druid',
  }
  
  QUALITY = {
      1: 'Common',
      2: 'Uncommon',
      3: 'Rare',
      4: 'Epic',
      5: 'Legendary',
      6: 'Artifact',
      7: 'Heirloom',
  }
  
  RACE_TO_FACTION = {
      1: 'Alliance',
      2: 'Horde',
      3: 'Alliance',
      4: 'Alliance',
      5: 'Horde',
      6: 'Horde',
      7: 'Alliance',
      8: 'Horde',
      9: 'Horde',
      10: 'Horde',
      11: 'Alliance',
      22: 'Alliance',
      24: '?',
      25: 'Alliance',
      26: 'Horde',
  }
  
  EXPANSION = {
      0: ('wow', 'World of Warcraft'),
      1: ('bc', 'The Burning Crusade'),
      2: ('lk', 'Wrath of the Lich King'),
      3: ('cata', 'Cataclysm'),
      4: ('mop', 'Mists of Pandaria'),
      5: ('wod', 'Warlords of Draenor'),
  }
  
  RAIDS = {
      'wow': (2717, 2677, 3429, 3428),
      'bc': (3457, 3836, 3923, 3607, 3845, 3606, 3959, 4075),
      'lk': (4603, 3456, 4493, 4500, 4273, 2159, 4722, 4812, 4987),
      'cata': (5600, 5094, 5334, 5638, 5723, 5892),
      'mop': (6125, 6297, 6067, 6622, 6738),
      'wod': (6996, 6967, 7545),
  }
  
subject: Add new hellfire citadel raid.