docs: def increment(self, version_number_idx: int, increment: int):
          """
          increment the version number with `n` at index `i`.
          >>> from Redy.Tools.Version import Version
          >>> a = Version('1.0.0.2')
          >>> a.increment(version_number_idx=2, increment=1)
          >>> assert a == ('1.0.1.0')
          >>> print(a[0])
          >>> a[0] = 2
          """
          _numbers = list(self._numbers)
          _numbers[version_number_idx] += increment
          for each in range(version_number_idx + 1, len(_numbers)):
              _numbers[each] = 0
          self._numbers = tuple(_numbers)