was especially problematic for the FileType type, as a default file would
always be opened, even if a file argument was specified on the command line.
-- Issue #15906: Fix a regression in `argparse` caused by the preceding change,
+- Issue #15906: Fix a regression in argparse caused by the preceding change,
when ``action='append'``, ``type='str'`` and ``default=[]``.
+- Issue #16113: Added sha3 module based on the Keccak reference implementation
+ 3.2. The `hashlib` module has four additional hash algorithms: `sha3_224`,
+ `sha3_256`, `sha3_384` and `sha3_512`. As part of the patch some common
+ code was moved from _hashopenssl.c to hashlib.h.
+
+ Extension Modules
+ -----------------
+
+ - Issue #12268: The io module file object write methods no longer abort early
+ when one of its write system calls is interrupted (EINTR).
+
Tests
-----