Add :c:func:`PyObject_VisitManagedDict` and :c:func:`PyObject_ClearManagedDict` functions which must be called by the traverse and clear functions of a type using :c:macro:`Py_TPFLAGS_MANAGED_DICT` flag. Patch by Victor Stinner.
Add :c:func:`PyObject_VisitManagedDict` and :c:func:`PyObject_ClearManagedDict` functions which must be called by the traverse and clear functions of a type using :c:macro:`Py_TPFLAGS_MANAGED_DICT` flag. Patch by Victor Stinner.