Core and Builtins
-----------------
+ - Issue #17408: Avoid using an obsolete instance of the copyreg module when
+ the interpreter is shutdown and then started again.
+
+- Issue #5845: Enable tab-completion in the interactive interpreter by
+ default, thanks to a new sys.__interactivehook__.
+
+- Issue #17115,17116: Module initialization now includes setting __package__ and
+ __loader__ attributes to None.
+
+- Issue #17853: Ensure locals of a class that shadow free variables always win
+ over the closures.
+
- Issue #17863: In the interactive console, don't loop forever if the encoding
can't be fetched from stdin.