anchor.diff:    DUnitX.TestFramework;
   
   const
  -  CanonicalVersion = '1.2.0';
  +  CanonicalVersion = '1.3.0';
   
   type
   
  
positive.code:   Assert.AreEqual(false, TLuhn.Valid(':9'));
  end;
  
  procedure TLuhnTest.valid_strings_with_a_non_digit_included_become_invalid;
  begin
    Assert.AreEqual(false, TLuhn.Valid('055a 444 285'));
  
negative.code:     [Test]
      [Ignore]
      procedure invalid_credit_card;
  
      [Test]
      [Ignore]
      procedure valid_number_with_an_even_number_of_digits;
  
      [Test]
      [Ignore]
  