Patch by Mark Roseman

* Add 'parens' style to highlight both opener and closer.
* Make 'default' style, which is not default, a synonym for 'opener'.
* Make time-delay work the same with all styles.
* Add help for config dialog extensions tab, including parenmatch.
* Add new tests. 
Original patch by Charles Wohlganger.

Add a new "python3 -m test.bisect" tool to bisect failing tests.

It can be used to find which test method(s) leak references, leak
files, etc.

Free also co_extra->ce_extras, not only co_extra.

Clarify that the break statement breaks out of the innermost enclosing for or while loop.

Raise a ValueError if the second argument is NULL and the wchar_t\*
string contains null characters.

Patch by Cheryl Sabella

This happened because shortcut has a class binding and 'break' was not returned.
Fix other potential conflicts between IDLE and default key bindings.

* Add news item

* Update NEWS

Patch by Cheryl Sabella.

New error condition paths were introduced, which did not decrement
`key2` and `val2` objects.  Therefore, decrement references before
jumping to the error label.
Signed-off-by: Eric N. Vander Weele <ericvw@gmail.com>

* Change the regrtest --huntrleaks checker to decide if a test file
  leaks or not. Require that each run leaks at least 1 reference.
* Warmup runs are now completely ignored: ignored in the checker test
  and not used anymore to compute the sum.
* Add an unit test for a reference leak.

Example of reference differences previously considered a failure
(leak) and now considered as success (success, no leak):

    [3, 0, 0]
    [0, 1, 0]
    [8, -8, 1]

Also, change '*' in the tkinter import to an explicit list of names.
Patch by Cheryl Sabella.

Leading whitespace was incorrectly dropped during folding of certain lines in the _header_value_parser's folding algorithm.  This makes the whitespace handling code consistent.

* bpo-30765: Avoid blocking when PyThread_acquire_lock() is asked not to lock

This is especially important if PyThread_acquire_lock() is called reentrantly
(for example from a signal handler).

* Update 2017-06-26-14-29-50.bpo-30765.Q5iBmf.rst

* Avoid core logic when taking the mutex failed

* bpo-30764: regrtest: change exit code on failure

* Exit code 2 if failed tests ("bad")
* Exit code 3 if interrupted

* bpo-30764: regrtest: add --fail-env-changed option

If the option is set, mark a test as failed if it alters the
environment, for example if it creates a file without removing it.

bpo-30764, bpo-29335: test_child_terminated_in_stopped_state() of
test_subprocess now uses support.SuppressCrashReport() to prevent the
creation of a core dump on FreeBSD.

* regrtest --list-cases now supports --match and --match-file options.
  Example: ./python -m test --list-cases -m FileTests test_os
* --list-cases now also sets support.verbose to False to prevent
  messages to stdout when loading test modules.
* Add support._match_test() private function.

Verify user-entered key sequences by trying to bind them with tk.
Add tests for all 3 validation functions.
Original patch by G Polo.  Tests added by Cheryl Sabella.

in `os.putenv()` and `os.spawn*()`.

* Fix bpo-30596: Add close() method to multiprocessing.Process

* Raise ValueError if close() is called before the Process is finished running

* Add docs

* Add NEWS blurb

defiend -> defined

replace `(i << 2) + 1` with `i*5`

Patch by Cheryl Sabella.

Explicitly cast on integer downcasting to fix compiler warnings.

(cherry picked from libexpat commit 788bff7a3baad1983b15b17c29e19e1a1a795c48)

Redundant code leftover from cleanup in #16191: the variable `err` is being written to, even though it wasn't used after that point.

order of keyword arguments of TestCase.subTest().

Bug didn't manifest itself when importing a module with source as .py files are always the first on the search path. The issue only showed up in bytecode-only packages where the calculated file path would be ``__init__.py/__init__.pyc``.

Patch by Alexandru Ardelean.

Prevent passing other invalid environment variables and command arguments.

Patch by Cheryl Sabella

Fix a regression introduced by myself in the commit
526b2265.

* bpo-30726: Fix elementtree warnings on Windows

Caused by usage of `getenv` which should be safe. And a few integer
truncations which should also be ok.

* bpo-30726: Don't ignore libexpat warnings which haypo intends to fix upstream