message: fixed typo for CubicalComplex
diff: @@ -86,7 +86,7 @@ cdef class CubicalComplex:
  elif ((dimensions is None) and (top_dimensional_cells is None)
  and (perseus_file != '')):
  if os.path.isfile(perseus_file):
  - self.thisptr = new Bitmap_cubical_complex_base_interface(str.encode(perseus_file))
  + self.thisptr = new Bitmap_cubical_complex_base_interface(perseus_file.encode('utf-8'))
  else:
  print("file " + perseus_file + " not found.")
  else:
  