add comment to promoter handling: pos 2 is excluded

src/libaevol/7/PromoterList.cpp

@@ -175,6 +175,7 @@ void PromoterList::move_all_promoters_after(Dna_7::size_type pos,
 PromoterList PromoterList::duplicate_promoters_included_in(Dna_7::size_type pos_1,
                                                            Dna_7::size_type pos_2,
                                                            Dna_7::size_type dna_len) {
+// Lagging prom starting at pos2 excluded !!
   // 1) Get promoters to be duplicated
   PromoterList retrieved_promoters = promoters_included_in(pos_1, pos_2, dna_len);
 
@@ -626,6 +627,7 @@ void PromoterList::look_for_new_lagging_promoters_starting_before(const Dna_7& d
 PromoterList PromoterList::promoters_included_in(Dna_7::size_type pos_1,
                                                  Dna_7::size_type pos_2,
                                                  Dna_7::size_type dna_len) {
+  // Lagging prom starting at pos2 excluded !!
   PromoterList promoter_list;
 
   if (pos_1 < pos_2) {