message: Add some comments for readability
diff: @@ -1204,6 +1204,7 @@ class Simplex_tree {
  */
  bool auto_dimension_set(int old_dimension) {
  int new_dimension = -1;
  + // Browse the tree from te left to the right as higher dimension cells are more likely on the left part of the tree
  for (Simplex_handle sh : skeleton_simplex_range(old_dimension)) {
  #ifdef DEBUG_TRACES
  for (auto vertex : simplex_vertex_range(sh)) {
  @@ -1214,6 +1215,7 @@ class Simplex_tree {
  int sh_dimension = dimension(sh);
  if (sh_dimension >= old_dimension)
  + // Stop browsing as soon as the dimension is reached, no need to go furter
  return false;
  new_dimension = std::max<int>(new_dimension, sh_dimension);
  }
  