message: code review: Let the exception propagate
diff: @@ -295,13 +295,9 @@ cdef class SimplexTree:
  """
  cdef pair[Simplex_tree_boundary_iterator, Simplex_tree_boundary_iterator] it = self.get_ptr().get_boundary_iterators(simplex)
  - try:
  while it.first != it.second:
  yield self.get_ptr().get_simplex_and_filtration(dereference(it.first))
  preincrement(it.first)
  - except RuntimeError:
  - print("simplex not found - cannot find boundaries")
  -
  def remove_maximal_simplex(self, simplex):
  """This function removes a given maximal N-simplex from the simplicial
  