Merge changelog marks refactoring changelog entries as discussed in review

changelog/3317.feature

@@ -1,3 +1,4 @@
-Revamp the internals of the ``pytest.mark`` implementation with correct per node handling and introduce a new ``Node.iter_markers``
-API for mark iteration over nodes which fixes a number of long standing bugs caused by the old approach. More details can be
-found in `the marks documentation <https://docs.pytest.org/en/latest/mark.html#marker-revamp-and-iteration>`_.
+Revamp the internals of the ``pytest.mark`` implementation with correct per node handling which fixes a number of
+long standing bugs caused by the old design. This introduces new ``Node.iter_markers(name)`` and ``Node.get_closest_mark(name)`` APIs.
+Users are **strongly encouraged** to read `reasons for the revamp in the docs <https://docs.pytest.org/en/latest/mark.html#marker-revamp-and-iteration>`_,
+or jump over to details about `updating existing code to use the new APIs <https://docs.pytest.org/en/latest/mark.html#updating-code>`_.

changelog/3446.feature

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-Introduce ``Node.get_closest_marker(name, default=None)`` to support simple marker usage scenarios.

changelog/3459.feature

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-Introduce optional name-based filtering for ``Node.iter_markers``.