Library
-------
++- Issue #19717: Makes Path.resolve() succeed on paths that do not exist.
++ Patch by Vajrasky Kok
++
+- Issue #28563: Fixed possible DoS and arbitrary code execution when handle
+ plural form selections in the gettext module. The expression parser now
+ supports exact syntax supported by GNU gettext.
+
+- Issue #28387: Fixed possible crash in _io.TextIOWrapper deallocator when
+ the garbage collector is invoked in other thread. Based on patch by
+ Sebastian Cufre.
+
+- Issue #27517: LZMA compressor and decompressor no longer raise exceptions if
+ given empty data twice. Patch by Benjamin Fogle.
+
+- Issue #28549: Fixed segfault in curses's addch() with ncurses6.
+
+- Issue #28449: tarfile.open() with mode "r" or "r:" now tries to open a tar
+ file with compression before trying to open it without compression. Otherwise
+ it had 50% chance failed with ignore_zeros=True.
+
+- Issue #23262: The webbrowser module now supports Firefox 36+ and derived
+ browsers. Based on patch by Oleg Broytman.
+
+- Issue #27939: Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused
+ by representing the scale as float value internally in Tk. tkinter.IntVar
+ now works if float value is set to underlying Tk variable.
+
+- Issue #28255: calendar.TextCalendar.prweek() no longer prints a space after
+ a weeks's calendar. calendar.TextCalendar.pryear() no longer prints redundant
+ newline after a year's calendar. Based on patch by Xiang Zhang.
+
+- Issue #28255: calendar.TextCalendar.prmonth() no longer prints a space
+ at the start of new line after printing a month's calendar. Patch by
+ Xiang Zhang.
+
+- Issue #20491: The textwrap.TextWrapper class now honors non-breaking spaces.
+ Based on patch by Kaarle Ritvanen.
+
+- Issue #28353: os.fwalk() no longer fails on broken links.
+
+- Issue #28430: Fix iterator of C implemented asyncio.Future doesn't accept
+ non-None value is passed to it.send(val).
+
+- Issue #27025: Generated names for Tkinter widgets now start by the "!" prefix
+ for readability (was "`").
+
+- Issue #25464: Fixed HList.header_exists() in tkinter.tix module by addin
+ a workaround to Tix library bug.
+
+- Issue #28488: shutil.make_archive() no longer adds entry "./" to ZIP archive.
+
+- Issue #25953: re.sub() now raises an error for invalid numerical group
+ reference in replacement template even if the pattern is not found in
+ the string. Error message for invalid group reference now includes the
+ group index and the position of the reference.
+ Based on patch by SilentGhost.
+
+- Issue #28469: timeit now uses the sequence 1, 2, 5, 10, 20, 50,... instead
+ of 1, 10, 100,... for autoranging.
+
+- Issue #28115: Command-line interface of the zipfile module now uses argparse.
+ Added support of long options.
+
+- Issue #18219: Optimize csv.DictWriter for large number of columns.
+ Patch by Mariatta Wijaya.
+
+- Issue #28448: Fix C implemented asyncio.Future didn't work on Windows.
+
+- Issue #23214: In the "io" module, the argument to BufferedReader and
+ BytesIO's read1() methods is now optional and can be -1, matching the
+ BufferedIOBase specification.
+
+- Issue #28480: Fix error building socket module when multithreading is
+ disabled.
+
+- Issue #28240: timeit: remove ``-c/--clock`` and ``-t/--time`` command line
+ options which were deprecated since Python 3.3.
+
+- Issue #28240: timeit now repeats the benchmarks 5 times instead of only 3
+ to make benchmarks more reliable.
+
+- Issue #28240: timeit autorange now uses a single loop iteration if the
+ benchmark takes less than 10 seconds, instead of 10 iterations.
+ "python3 -m timeit -s 'import time' 'time.sleep(1)'" now takes 4 seconds
+ instead of 40 seconds.
+
+- Distutils.sdist now looks for README and setup.py files with case
+ sensitivity. This behavior matches that found in Setuptools 6.0 and
+ later. See `setuptools 100
+ <https://github.com/pypa/setuptools/issues/100>`_ for rationale.
+
+- Issue #24452: Make webbrowser support Chrome on Mac OS X.
+
+- Issue #20766: Fix references leaked by pdb in the handling of SIGINT
+ handlers.
+
- Issue #27998: Fixed bytes path support in os.scandir() on Windows.
Patch by Eryk Sun.