Core and Builtins
-----------------
-- Issue #12273: Remove ast.__version__. AST changes can be accounted for by
- checking sys.version_info or sys._mercurial.
-
- Issue #11627: Fix segfault when __new__ on a exception returns a non-exception
class.
Library
-------
+- Issue #12273: Remove ast.__version__. AST changes can be accounted for by
+ checking sys.version_info or sys._mercurial.
+
- Silence spurious "broken pipe" tracebacks when shutting down a
ProcessPoolExecutor.