new_contents: mutants = {
      0: {'label': 'original',
          'mutations': []},
      1: {'label': 'fake1',
          'mutations': [(1135, 'V')]},
      2: {'label': 'fake2',
          'mutations': [(1135, 'E')]},
      3: {'label': 'fake3',
          'mutations': [(1135, 'Q')]},
      4: {'label': 'fake4',
          'mutations': [(1135, 'R')]},
      5: {'label': 'fake5',
          'mutations': [(1135, 'A')]},
      6: {'label': 'fake6',
          'mutations': [(1135, 'M')]},
      7: {'label': 'fake7',
          'mutations': [(1135, 'T')]},
      8: {'label': 'fake8',
          'mutations': [(1135, 'W')]}
  }
  
subject: add "Matt's very rationally designed mutants" in mutants_database.py