Library
-------
++- Issue #10883: Fix socket leaks in urllib.request when using FTP.
++
+- Issue #12592: Make Python build on OpenBSD 5 (and future major releases).
+
+- Issue #12372: POSIX semaphores are broken on AIX: don't use them.
+
+- Issue #12551: Provide a get_channel_binding() method on SSL sockets so as
+ to get channel binding data for the current SSL session (only the
+ "tls-unique" channel binding is implemented). This allows the implementation
+ of certain authentication mechanisms such as SCRAM-SHA-1-PLUS. Patch by
+ Jacek Konieczny.
+
+- Issue #665194: email.utils now has format_datetime and parsedate_to_datetime
+ functions, allowing for round tripping of RFC2822 format dates.
+
+- Issue #12571: Add a plat-linux3 directory mirroring the plat-linux2
+ directory, so that "import DLFCN" and other similar imports work on
+ Linux 3.0.
+
+- Issue #7484: smtplib no longer puts <> around addresses in VRFY and EXPN
+ commands; they aren't required and in fact postfix doesn't support that form.
+
+- 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.
+
+- Fix potential resource leaks in concurrent.futures.ProcessPoolExecutor
+ by joining all queues and processes when shutdown() is called.
+
+- Issue #11603: Fix a crash when __str__ is rebound as __repr__. Patch by
+ Andreas Stührk.
+
+- Issue #11321: Fix a crash with multiple imports of the _pickle module when
+ embedding Python. Patch by Andreas Stührk.
+
+- Issue #6755: Add get_wch() method to curses.window class. Patch by Iñigo
+ Serna.
+
+- Add cgi.closelog() function to close the log file.
+
+- Issue #12502: asyncore: fix polling loop with AF_UNIX sockets.
+
+- Issue #4376: ctypes now supports nested structures in a endian different than
+ the parent structure. Patch by Vlad Riscutia.
+
+- Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a
+ TextIOWrapper to a huge value, not TypeError.
+
+- Issue #12504: Close file handles in a timely manner in packaging.database.
+ This fixes a bug with the remove (uninstall) feature on Windows.
+
+- Issues #12169 and #10510: Factor out code used by various packaging commands
+ to make HTTP POST requests, and make sure it uses CRLF.
+
+- Issue #12016: Multibyte CJK decoders now resynchronize faster. They only
+ ignore the first byte of an invalid byte sequence. For example,
+ b'\xff\n'.decode('gb2312', 'replace') gives '\ufffd\n' instead of '\ufffd'.
+
+- Issue #12459: time.sleep() now raises a ValueError if the sleep length is
+ negative, instead of an infinite sleep on Windows or raising an IOError on
+ Linux for example, to have the same behaviour on all platforms.
+
+- Issue #12451: pydoc: html_getfile() now uses tokenize.open() to support
+ Python scripts using a encoding different than UTF-8 (read the coding cookie
+ of the script).
+
+- Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors
+ if the process has only one pipe.
+
+- Issue #12467: warnings: fix a race condition if a warning is emitted at
+ shutdown, if globals()['__file__'] is None.
+
+- Issue #12451: pydoc: importfile() now opens the Python script in binary mode,
+ instead of text mode using the locale encoding, to avoid encoding issues.
+
+- Issue #12451: runpy: run_path() now opens the Python script in binary mode,
+ instead of text mode using the locale encoding, to support other encodings
+ than UTF-8 (scripts using the coding cookie).
+
+- Issue #12451: xml.dom.pulldom: parse() now opens files in binary mode instead
+ of the text mode (using the locale encoding) to avoid encoding issues.
+
- Issue #12147: Adjust the new-in-3.2 smtplib.send_message method for better
- conformance to the RFCs: correctly handle Sender and Resent headers.
+ conformance to the RFCs: correctly handle Sender and Resent- headers.
- Issue #12352: Fix a deadlock in multiprocessing.Heap when a block is freed by
the garbage collector while the Heap lock is held.
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