old_contents: # This is a list of official hero names in order of release date. The
  # first set of heroes from Abathur to Zeratul were available on
  # release. The rest are listed in chronological order of release. New
  # heroes should be added to the end of the list.
  HEROES = [
      "Abathur",
      "Arthas",
      "Diablo",
      "E.T.C.",
      "Falstad",
      "Gazlowe",
      "Illidan",
      "Kerrigan",
      "Malfurion",
      "Muradin",
      "Nazeebo",
      "Nova",
      "Raynor",
      "Sgt. Hammer",
      "Sonya",
      "Stitches",
      "Tassadar",
      "Tyrael",
      "Tyrande",
      "Uther",
      "Valla",
      "Zeratul",
      "Tychus",
      "Li Li",
      "Brightwing",
      "Murky",
      "Zagara",
      "Rehgar",
      "Chen",
      "Azmodan",
      "Anub'arak",
      "Jaina",
      "Thrall",
      "The Lost Vikings",
      "Sylvanas",
      "Kael'thas",
      "Johanna",
      "The Butcher",
      "Leoric",
      "Kharazim",
      "Rexxar",
      "Lt. Morales",
      "Artanis",
      "Cho",
      "Gall",
      "Lunara",
      "Greymane",
      "Li-Ming",
      "Xul",
      "Dehaka",
      "Tracer",
      "Chromie",
      "Medivh",
      "Guldan",
      "Auriel",
      "Alarak",
      "Zarya",
      "Samuro",
      "Varian",
      "Ragnaros",
      "Zul'jin",
  ]
  
new_contents: # This is a list of official hero names in order of release date. The
  # first set of heroes from Abathur to Zeratul were available on
  # release. The rest are listed in chronological order of release. New
  # heroes should be added to the end of the list.
  HEROES = [
      "Abathur",
      "Arthas",
      "Diablo",
      "E.T.C.",
      "Falstad",
      "Gazlowe",
      "Illidan",
      "Kerrigan",
      "Malfurion",
      "Muradin",
      "Nazeebo",
      "Nova",
      "Raynor",
      "Sgt. Hammer",
      "Sonya",
      "Stitches",
      "Tassadar",
      "Tyrael",
      "Tyrande",
      "Uther",
      "Valla",
      "Zeratul",
      "Tychus",
      "Li Li",
      "Brightwing",
      "Murky",
      "Zagara",
      "Rehgar",
      "Chen",
      "Azmodan",
      "Anub'arak",
      "Jaina",
      "Thrall",
      "The Lost Vikings",
      "Sylvanas",
      "Kael'thas",
      "Johanna",
      "The Butcher",
      "Leoric",
      "Kharazim",
      "Rexxar",
      "Lt. Morales",
      "Artanis",
      "Cho",
      "Gall",
      "Lunara",
      "Greymane",
      "Li-Ming",
      "Xul",
      "Dehaka",
      "Tracer",
      "Chromie",
      "Medivh",
      "Guldan",
      "Auriel",
      "Alarak",
      "Zarya",
      "Samuro",
      "Varian",
      "Ragnaros",
      "Zul'jin",
      "Valeera",
  ]
  
subject: add Valeera