#21047: set the default value for the *convert_charrefs* argument of HTMLParser to True.  Patch by Berker Peksag.

#15114: the strict mode and argument of HTMLParser, HTMLParser.error, and the HTMLParserError exception have been removed.

tuples by adding 'or slices'. Added ', not <typename' for bytearrays.
Original patch by Claudiu Popa.

command line parameters: use Py_DecodeLocale() and PyUnicode_DecodeFSDefault().

``_Py_wchar2char()`` to :c:func:`Py_EncodeLocale`, and document these
functions.

Double quotes in expanded variables can match literal double quotes,
which makes for a big mess when passing in a quoted argument (like
"/p:externalsDir=..\externals", for example).

Followup to issue #20540; patch by Serhiy.

In particular this allows to initialize images from binary data.

In particular this allows to initialize images from binary data.

defers making a copy until it is mutated, improving performance and
memory use on some use cases.

Patch by David Wilson.

A side effect is that Python depends to the WinSock library.

operations require the socket to be non-blocking

the socket to be non-blocking

- Close #22063: socket operations (socket,recv, sock_sendall, sock_connect,
  sock_accept) now raise an exception in debug mode if sockets are in blocking
  mode.
- asyncio: Use the new os.set_blocking() function of Python 3.5 if available

sock_accept) now raise an exception in debug mode if sockets are in blocking
mode.

set the blocking mode of a file descriptor (False if the O_NONBLOCK flag is
set, True otherwise). These functions are not available on Windows.

* _WaitHandleFuture.cancel() now notify IocpProactor through the overlapped
  object that the wait was cancelled.
* Optimize IocpProactor.wait_for_handle() gets the result if the wait is
  signaled immediatly.
* Enhance representation of Future and Future subclasses

  - Add "created at filename:lineno" in the representation
  - Add Future._repr_info() method which can be more easily overriden than
    Future.__repr__(). It should now be more easy to enhance Future
    representation without having to modify each subclass. For example,
    _OverlappedFuture and _WaitHandleFuture get the new "created at" information.
  - Use reprlib to format Future result, and function arguments when formatting a
    callback, to limit the length of the representation.

* Fix repr(_WaitHandleFuture)
* _WaitHandleFuture and _OverlappedFuture: hide frames of internal calls in the
  source traceback.
* Cleanup ProactorIocp._poll(): set the timeout to 0 after the first call to
  GetQueuedCompletionStatus()
* test_locks: close the temporary event loop and check the condition lock
* Remove workaround in test_futures, no more needed

* _WaitHandleFuture.cancel() now notify IocpProactor through the overlapped
  object that the wait was cancelled.
* Optimize IocpProactor.wait_for_handle() gets the result if the wait is
  signaled immediatly.
* Enhance representation of Future and Future subclasses

  - Add "created at filename:lineno" in the representation
  - Add Future._repr_info() method which can be more easily overriden than
    Future.__repr__(). It should now be more easy to enhance Future
    representation without having to modify each subclass. For example,
    _OverlappedFuture and _WaitHandleFuture get the new "created at" information.
  - Use reprlib to format Future result, and function arguments when formatting a
    callback, to limit the length of the representation.

* Fix repr(_WaitHandleFuture)
* _WaitHandleFuture and _OverlappedFuture: hide frames of internal calls in the
  source traceback.
* Cleanup ProactorIocp._poll(): set the timeout to 0 after the first call to
  GetQueuedCompletionStatus()
* test_locks: close the temporary event loop and check the condition lock
* Remove workaround in test_futures, no more needed