message: Thanks to code coverage, I fugured out some tests were not performed because of teir same name
diff: @@ -62,17 +62,17 @@ def test_dimension_or_perseus_file_constructor():
  assert cub.__is_defined() == False
  assert cub.__is_persistence_defined() == False
  -def test_dimension_constructor():
  +def test_dimension_simple_constructor():
  cub = CubicalComplex(dimensions=[3, 3],
  top_dimensional_cells = [1,2,3,4,5,6,7,8,9])
  assert cub.__is_defined() == True
  assert cub.__is_persistence_defined() == False
  - assert cub.persistence() == [(1, (0.0, 100.0)), (0, (0.0, float('inf')))]
  + assert cub.persistence() == [(0, (1.0, float('inf')))]
  assert cub.__is_persistence_defined() == True
  - assert cub.betti_numbers() == [1, 0]
  - assert cub.persistent_betti_numbers(0, 1000) == [0, 0]
  + assert cub.betti_numbers() == [1, 0, 0]
  + assert cub.persistent_betti_numbers(0, 1000) == [0, 0, 0]
  -def test_dimension_constructor():
  +def test_dimension_file_constructor():
  # Create test file
  test_file = open('CubicalOneSphere.txt', 'w')
  test_file.write('2\n3\n3\n0\n0\n0\n0\n100\n0\n0\n0\n0\n')
  