Library
-------
+- Issue #18808: Thread.join() now waits for the underlying thread state to
+ be destroyed before returning. This prevents unpredictable aborts in
+ Py_EndInterpreter() when some non-daemon threads are still running.
+
+- Issue #18458: Prevent crashes with newer versions of libedit. Its readline
+ emulation has changed from 0-based indexing to 1-based like gnu readline.
+
+- Issue #18852: Handle case of ``readline.__doc__`` being ``None`` in the new
+ readline activation code in ``site.py``.
+
- Issue #18672: Fixed format specifiers for Py_ssize_t in debugging output in
- the _sre moduel.
+ the _sre module.
- Issue #18830: inspect.getclasstree() no more produces duplicated entries even
when input list contains duplicates.