chore: Work around pytest-cov and missed lines covered in child process

dodecaphony/optimization.py

@@ -60,7 +60,7 @@ def generate_new_records(
         transformation_probabilities: list[float],
         scoring_sets: list[str],
         scoring_sets_registry: SCORING_SETS_REGISTRY_TYPE
-) -> list[Record]:
+) -> list[Record]:  # pragma: no cover  # Actually, it is covered, but `pytest-cov` misses it.
     """
     Generate records for given tasks.
 

dodecaphony/utils.py

@@ -18,10 +18,10 @@ def starmap_in_parallel(
     This function contains boilerplate code that is needed for correct work
     of `pytest-cov`. Usage of `mp.Pool` as context manager is not alternative
     to this function, because:
-    1) not all covered lines of code may be marked as covered;
-    2) some files with names like '.coverage.hostname.*' may be not deleted.
-
-    See more: https://github.com/pytest-dev/pytest-cov/issues/250.
+    1) not all covered lines of code may be marked as covered
+       (see more: https://pytest-cov.readthedocs.io/en/latest/subprocess-support.html);
+    2) some files with names like '.coverage.hostname.*' may be not deleted
+       (see more: https://github.com/pytest-dev/pytest-cov/issues/250).
 
     :param fn:
         function