Initial Update

[pyup-bot]

This is my first visit to this fine repo so I have bundled all updates in a single pull request to make things easier for you to merge.

Close this pull request and delete the branch if you want me to start with single pull requests right away

Here's the executive summary:

Updates

Here's a list of all the updates bundled in this pull request. I've added some links to make it easier for you to find all the information you need.

coverage	4.1	»	4.2	PyPI | Changelog | Docs
PyYAML	3.11	»	3.12	PyPI | Homepage
tox	2.3.1	»	2.5.0	PyPI | Changelog | Docs
cryptography	1.4	»	1.5.3	PyPI | Changelog | Repo
pip	8.1.2	»	9.0.1	PyPI | Changelog | Homepage
pytest	2.9.2	»	3.0.4	PyPI | Changelog | Homepage
flake8	2.6.0	»	3.2.0	PyPI | Repo

Changelogs

coverage 4.1 -> 4.2

4.2

---

• Since concurrency=multiprocessing uses subprocesses, options specified on
  the coverage.py command line will not be communicated down to them. Only
  options in the configuration file will apply to the subprocesses.
  Previously, the options didn't apply to the subprocesses, but there was no
  indication. Now it is an error to use --concurrency=multiprocessing and
  other run-affecting options on the command line. This prevents
  failures like those reported in issue 495_.

• Filtering the HTML report is now faster, thanks to Ville Skyttä.

.. _issue 495: https://bitbucket.org/ned/coveragepy/issues/495/branch-and-concurrency-are-conflicting

4.2b1

---

Work from the PyCon 2016 Sprints!

• BACKWARD INCOMPATIBILITY: the coverage combine command now ignores an
  existing .coverage data file. It used to include that file in its
  combining. This caused confusing results, and extra tox "clean" steps. If
  you want the old behavior, use the new coverage combine --append option.

• The concurrency option can now take multiple values, to support programs
  using multiprocessing and another library such as eventlet. This is only
  possible in the configuration file, not from the command line. The
  configuration file is the only way for sub-processes to all run with the same
  options. Fixes issue 484_. Thanks to Josh Williams for prototyping.

• Using a concurrency setting of multiprocessing now implies
  --parallel so that the main program is measured similarly to the
  sub-processes.

• When using automatic subprocess measurement, running coverage commands
  would create spurious data files. This is now fixed, thanks to diagnosis and
  testing by Dan Riti. Closes issue 492.

• A new configuration option, report:sort, controls what column of the
  text report is used to sort the rows. Thanks to Dan Wandschneider, this
  closes issue 199_.

• The HTML report has a more-visible indicator for which column is being
  sorted. Closes issue 298_, thanks to Josh Williams.

• If the HTML report cannot find the source for a file, the message now
  suggests using the -i flag to allow the report to continue. Closes
  issue 231_, thanks, Nathan Land.

• When reports are ignoring errors, there's now a warning if a file cannot be
  parsed, rather than being silently ignored. Closes issue 396_. Thanks,
  Matthew Boehm.

• A new option for coverage debug is available: coverage debug config
  shows the current configuration. Closes issue 454_, thanks to Matthew
  Boehm.

• Running coverage as a module (python -m coverage) no longer shows the
  program name as __main__.py. Fixes issue 478_. Thanks, Scott Belden.

• The test_helpers module has been moved into a separate pip-installable
  package: unittest-mixins_.

.. _automatic subprocess measurement: http://coverage.readthedocs.io/en/latest/subprocess.html
.. _issue 199: https://bitbucket.org/ned/coveragepy/issues/199/add-a-way-to-sort-the-text-report
.. _issue 231: https://bitbucket.org/ned/coveragepy/issues/231/various-default-behavior-in-report-phase
.. _issue 298: https://bitbucket.org/ned/coveragepy/issues/298/show-in-html-report-that-the-columns-are
.. _issue 396: https://bitbucket.org/ned/coveragepy/issues/396/coverage-xml-shouldnt-bail-out-on-parse
.. _issue 454: https://bitbucket.org/ned/coveragepy/issues/454/coverage-debug-config-should-be
.. _issue 478: https://bitbucket.org/ned/coveragepy/issues/478/help-shows-silly-program-name-when-running
.. _issue 484: https://bitbucket.org/ned/coveragepy/issues/484/multiprocessing-greenlet-concurrency
.. _issue 492: https://bitbucket.org/ned/coveragepy/issues/492/subprocess-coverage-strange-detection-of
.. _unittest-mixins: https://pypi.python.org/pypi/unittest-mixins

tox 2.3.1 -> 2.5.0

2.5.0

---

• slightly backward incompatible: fix issue310: the {posargs} substitution
  now properly preserves the tox command line positional arguments. Positional
  arguments with spaces are now properly handled.
  NOTE: if your tox invocation previously used extra quoting for positional arguments to
  work around issue310, you need to remove the quoting. Example:
  tox -- "'some string'" has to now be written simply as
  tox -- "some string"
  thanks holger krekel. You can set minversion = 2.5.0 in the [tox]
  section of tox.ini to make sure people using your tox.ini use the correct version.

• fix 359: add COMSPEC to default passenv on windows. Thanks
  anthrotype.

• add support for py36 and py37 and add py36-dev and py37(nightly) to
  travis builds of tox. Thanks John Vandenberg.

• fix 348: add py2 and py3 as default environments pointing to
  "python2" and "python3" basepython executables. Also fix 347 by
  updating the list of default envs in the tox basic example.
  Thanks Tobias McNulty.

• make "-h" and "--help-ini" options work even if there is no tox.ini,
  thanks holger krekel.

• add {:} substitution, which is replaced with os-specific path
  separator, thanks Lukasz Rogalski.

• fix 305: downloadcache test env config is now ignored as pip-8
  does caching by default. Thanks holger krekel.

• output from install command in verbose (-vv) mode is now printed to console instead of
  being redirected to file, thanks Lukasz Rogalski

• fix 399. Make sure {envtmpdir} is created if it doesn't exist at the
  start of a testenvironment run. Thanks Manuel Jacob.

• fix 316: Lack of commands key in ini file is now treated as an error.
  Reported virtualenv status is 'nothing to do' instead of 'commands
  succeeded', with relevant error message displayed. Thanks Lukasz Rogalski.

2.4.1

---

• fix issue380: properly perform substitution again. Thanks Ian
  Cordasco.

2.4.0

---

• remove PYTHONPATH from environment during the install phase because a
  tox-run should not have hidden dependencies and the test commands will also
  not see a PYTHONPATH. If this causes unforeseen problems it may be
  reverted in a bugfix release. Thanks Jason R. Coombs.

• fix issue352: prevent a configuration where envdir==toxinidir and
  refine docs to warn people about changing "envdir". Thanks Oliver Bestwalter and holger krekel.

• fix issue375, fix issue330: warn against tox-setup.py integration as
  "setup.py test" should really just test with the current interpreter. Thanks Ronny Pfannschmidt.

• fix issue302: allow cross-testenv substitution where we substitute
  with {x,y} generative syntax. Thanks Andrew Pashkin.

• fix issue212: allow escaping curly brace chars "{" and "}" if you need the
  chars "{" and "}" to appear in your commands or other ini values.
  Thanks John Vandenberg.

• addresses issue66: add --workdir option to override where tox stores its ".tox" directory
  and all of the virtualenv environment. Thanks Danring.

• introduce per-venv list_dependencies_command which defaults
  to "pip freeze" to obtain the list of installed packages.
  Thanks Ted Shaw, Holger Krekel.

• close issue66: add documentation to jenkins page on how to avoid
  "too long shebang" lines when calling pip from tox. Note that we
  can not use "python -m pip install X" by default because the latter
  adds the CWD and pip will think X is installed if it is there.
  "pip install X" does not do that.

• new list_dependencies_command to influence how tox determines
  which dependencies are installed in a testenv.

• (experimental) New feature: When a search for a config file fails, tox tries loading
  setup.cfg with a section prefix of "tox".

• fix issue275: Introduce hooks tox_runtest_pre``` and tox_runtest_post`` which run before and after the tests of a venv,
  respectively. Thanks to Matthew Schinckel and itxaka serrano.

• fix issue317: evaluate minversion before tox config is parsed completely.
  Thanks Sachi King for the PR.

• added the "extras" environment option to specify the extras to use when doing the
  sdist or develop install. Contributed by Alex Grönholm.

• use pytest-catchlog instead of pytest-capturelog (latter is not
  maintained, uses deprecated pytest API)

2.3.2

---

• fix issue314: fix command invocation with .py scripts on windows.

• fix issue279: allow cross-section substitution when the value contains
  posargs. Thanks Sachi King for the PR.

cryptography 1.4 -> 1.5.3

1.5.2

• Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2j.

1.5.1

• Updated Windows and OS X wheels to be compiled against OpenSSL 1.0.2i.
• Resolved a UserWarning when used with cffi 1.8.3.
• Fixed a memory leak in name creation with X.509.
• Added a workaround for old versions of setuptools.
• Fixed an issue preventing cryptography from compiling against
  OpenSSL 1.0.2i.

1.5

• Added
  :func:~cryptography.hazmat.primitives.asymmetric.padding.calculate_max_pss_salt_length.
• Added "one shot"
  :meth:~cryptography.hazmat.primitives.asymmetric.dsa.DSAPrivateKey.sign
  and
  :meth:~cryptography.hazmat.primitives.asymmetric.dsa.DSAPublicKey.verify
  methods to DSA keys.
• Added "one shot"
  :meth:~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePrivateKey.sign
  and
  :meth:~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicKey.verify
  methods to ECDSA keys.
• Switched back to the older callback model on Python 3.5 in order to mitigate
  the locking callback problem with OpenSSL <1.1.0.
• :class:~cryptography.x509.CertificateBuilder,
  :class:~cryptography.x509.CertificateRevocationListBuilder, and
  :class:~cryptography.x509.RevokedCertificateBuilder now accept timezone
  aware datetime objects as method arguments
• cryptography now supports OpenSSL 1.1.0 as a compilation target.

pip 8.1.2 -> 9.0.1

9.0.1

• Correct the deprecation message when not specifying a --format so that it
  uses the correct setting name (format) rather than the incorrect one
  (list_format) (:issue:4058).

• Fix pip check to check all available distributions and not just the
  local ones (:issue:4083).

• Fix a crash on non ASCII characters from lsb_release (:issue:4062).

• Fix an SyntaxError in an an used module of a vendored dependency
  (:issue:4059).

• Fix UNC paths on Windows (:issue:4064).

9.0.0

• BACKWARD INCOMPATIBLE Remove the attempted autodetection of requirement
  names from URLs, URLs must include a name via egg=.

• DEPRECATION pip install --egg have been deprecated and will be
  removed in the future. This "feature" has a long list of drawbacks which
  break nearly all of pip's other features in subtle and hard-to-diagnose
  ways.

• DEPRECATION --default-vcs option (:issue:4052).

• WARNING pip 9 cache can break forward compatibility with previous pip
  versions if your package repository allows chunked responses (:issue:4078).

• Add a pip check command to check installed packages dependencies
  (:pull:3750).

• Add option allowing user to abort pip operation if file/directory exists

• Add Appveyor CI

• Uninstall existing packages when performing an editable installation of
  the same packages (:issue:1548).

• pip show is less verbose by default. --verbose prints multiline fields.
  (:pull:3858).

• Add optional column formatting to pip list (:issue:3651).

• Add --not-required option to pip list, which lists packages that are
  not dependencies of other packages.

• Fix builds on systems with symlinked /tmp directory for custom
  builds such as numpy (:pull:3701).

• Fix regression in pip freeze: when there is more than one git remote,
  priority is given to the remote named origin (:pull:3708, :issue:3616).

• Fix crash when calling pip freeze with invalid requirement installed
  (:pull:3704, :issue:3681).

• Allow multiple --requirement files in pip freeze (:pull:3703).

• Implementation of pep-503 data-requires-python. When this field is
  present for a release link, pip will ignore the download when
  installing to a Python version that doesn't satisfy the requirement.

• pip wheel now works on editable packages too (it was only working on
  editable dependencies before); this allows running pip wheel on the result
  of pip freeze in presence of editable requirements (:pull:3695,
  :issue:3291).

• Load credentials from .netrc files (:pull:3715, :issue:3569).

• Add --platform, --python-version, --implementation and --abi parameters to
  pip download. These allow utilities and advanced users to gather
  distributions for interpreters other than the one pip is being run on.
  (:pull:3760)

• Skip scanning virtual environments, even when venv/bin/python is a dangling
  symlink.

• Added pip completion support for the fish shell.

• Fix problems on Windows on Python 2 when username or hostname contains
  non-ASCII characters (:issue:3463, :pull:3970, :pull:4000).

• Use git fetch --tags to fetch tags in addition to everything else that
  is normally fetched; this is necessary in case a git requirement url
  points to a tag or commit that is not on a branch (:pull:3791)

• Normalize package names before using in pip show (:issue:3976)

• Raise when Requires-Python do not match the running version and add
  --ignore-requires-python option as escape hatch (:pull:3846).

• Report the correct installed version when performing an upgrade in some
  corner cases (:issue:2382)

• Add -i shorthand for --index flag in pip search

• Do not optionally load C dependencies in requests (:issue:1840,
  :issue:2930, :issue:3024)

• Strip authentication from SVN url prior to passing it to svn
  (:pull:3697, :issue:3209).

• Also install in platlib with --target option (:pull:3694, :issue:3682).

• Restore the ability to use inline comments in requirements files passed to
  pip freeze (:issue:3680).

pytest 2.9.2 -> 3.0.4

3.0.4.dev0

==========

• Import errors when collecting test modules now display the full traceback (1976).
  Thanks cwitty for the report and nicoddemus_ for the PR.

• Fix confusing command-line help message for custom options with two or more metavar properties (2004).
  Thanks okulynyak and davehunt_ for the report and nicoddemus_ for the PR.

• When loading plugins, import errors which contain non-ascii messages are now properly handled in Python 2 (1998).
  Thanks nicoddemus for the PR.

• Fixed cyclic reference when pytest.raises is used in context-manager form (1965). Also as a
  result of this fix, sys.exc_info() is left empty in both context-manager and function call usages.
  Previously, sys.exc_info would contain the exception caught by the context manager,
  even when the expected exception occurred.
  Thanks MSeifert04 for the report and the PR.

• Fixed false-positives warnings from assertion rewrite hook for modules that were rewritten but
  were later marked explicitly by pytest.register_assert_rewrite
  or implicitly as a plugin (2005).
  Thanks RonnyPfannschmidt for the report and nicoddemus_ for the PR.

• Report teardown output on test failure (442).
  Thanks matclab or the PR.

• Fix teardown error message in generated xUnit XML.
  Thanks gdyuldin_ or the PR.

• Properly handle exceptions in multiprocessing tasks (1984).
  Thanks adborden for the report and nicoddemus_ for the PR.

• Clean up unittest TestCase objects after tests are complete (1649).
  Thanks d_b_w for the report and PR.

.. _adborden: https://github.com/adborden
.. _cwitty: https://github.com/cwitty
.. _d_b_w: https://github.com/d_b_w
.. _gdyuldin: https://github.com/gdyuldin
.. _matclab: https://github.com/matclab
.. _MSeifert04: https://github.com/MSeifert04
.. _okulynyak: https://github.com/okulynyak

.. _442: pytest-dev/pytest#442
.. _1965: pytest-dev/pytest#1965
.. _1976: pytest-dev/pytest#1976
.. _1984: pytest-dev/pytest#1984
.. _1998: pytest-dev/pytest#1998
.. _2004: pytest-dev/pytest#2004
.. _2005: pytest-dev/pytest#2005
.. _1649: pytest-dev/pytest#1649

3.0.3

=====

• The ids argument to parametrize again accepts unicode strings
  in Python 2 (1905).
  Thanks philpep for the report and nicoddemus_ for the PR.

• Assertions are now being rewritten for plugins in development mode
  (pip install -e) (1934).
  Thanks nicoddemus for the PR.

• Fix pkg_resources import error in Jython projects (1853).
  Thanks raquel-ucl for the PR.

• Got rid of AttributeError: 'Module' object has no attribute '_obj' exception
  in Python 3 (1944).
  Thanks axil for the PR.

• Explain a bad scope value passed to fixture declarations or
  a MetaFunc.parametrize() call. Thanks tgoodlet_ for the PR.

• This version includes pluggy-0.4.0, which correctly handles
  VersionConflict errors in plugins (704).
  Thanks nicoddemus for the PR.

.. _philpep: https://github.com/philpep
.. _raquel-ucl: https://github.com/raquel-ucl
.. _axil: https://github.com/axil
.. _tgoodlet: https://github.com/tgoodlet

.. _1853: pytest-dev/pytest#1853
.. _1905: pytest-dev/pytest#1905
.. _1934: pytest-dev/pytest#1934
.. _1944: pytest-dev/pytest#1944
.. _704: pytest-dev/pytest#704

3.0.2

=====

• Improve error message when passing non-string ids to pytest.mark.parametrize (1857).
  Thanks okken for the report and nicoddemus_ for the PR.

• Add buffer attribute to stdin stub class pytest.capture.DontReadFromInput
  Thanks joguSD_ for the PR.

• Fix UnicodeEncodeError when string comparison with unicode has failed. (1864)
  Thanks AiOO for the PR.

• pytest_plugins is now handled correctly if defined as a string (as opposed as
  a sequence of strings) when modules are considered for assertion rewriting.
  Due to this bug, much more modules were being rewritten than necessary
  if a test suite uses pytest_plugins to load internal plugins (1888).
  Thanks jaraco for the report and nicoddemus_ for the PR (1891_).

• Do not call tearDown and cleanups when running tests from
  unittest.TestCase subclasses with --pdb
  enabled. This allows proper post mortem debugging for all applications
  which have significant logic in their tearDown machinery (1890). Thanks
  mbyt for the PR.

• Fix use of deprecated getfuncargvalue method in the internal doctest plugin.
  Thanks ViviCoder_ for the report (1898_).

.. _joguSD: https://github.com/joguSD
.. _AiOO: https://github.com/AiOO
.. _mbyt: https://github.com/mbyt
.. _ViviCoder: https://github.com/ViviCoder

.. _1857: pytest-dev/pytest#1857
.. _1864: pytest-dev/pytest#1864
.. _1888: pytest-dev/pytest#1888
.. _1891: pytest-dev/pytest#1891
.. _1890: pytest-dev/pytest#1890
.. _1898: pytest-dev/pytest#1898

3.0.1

=====

• Fix regression when importorskip is used at module level (1822).
  Thanks jaraco and The-Compiler_ for the report and nicoddemus_ for the PR.

• Fix parametrization scope when session fixtures are used in conjunction
  with normal parameters in the same call (1832).
  Thanks The-Compiler for the report, Kingdread_ and nicoddemus_ for the PR.

• Fix internal error when parametrizing tests or fixtures using an empty ids argument (1849).
  Thanks OPpuolitaival for the report and nicoddemus_ for the PR.

• Fix loader error when running pytest embedded in a zipfile.
  Thanks mbachry_ for the PR.

.. _Kingdread: https://github.com/Kingdread
.. _mbachry: https://github.com/mbachry
.. _OPpuolitaival: https://github.com/OPpuolitaival

.. _1822: pytest-dev/pytest#1822
.. _1832: pytest-dev/pytest#1832
.. _1849: pytest-dev/pytest#1849

3.0.0

=====

Incompatible changes

A number of incompatible changes were made in this release, with the intent of removing features deprecated for a long
time or change existing behaviors in order to make them less surprising/more useful.

• Reinterpretation mode has now been removed. Only plain and rewrite
  mode are available, consequently the --assert=reinterp option is
  no longer available. This also means files imported from plugins or
  conftest.py will not benefit from improved assertions by
  default, you should use pytest.register_assert_rewrite() to
  explicitly turn on assertion rewriting for those files. Thanks
  flub_ for the PR.

• The following deprecated commandline options were removed:

• --genscript: no longer supported;
• --no-assert: use --assert=plain instead;
• --nomagic: use --assert=plain instead;
• --report: use -r instead;

Thanks to RedBeardCode_ for the PR (1664_).

• ImportErrors in plugins now are a fatal error instead of issuing a
  pytest warning (1479). Thanks to The-Compiler for the PR.

• Removed support code for Python 3 versions < 3.3 (1627_).

• Removed all py.test-X* entry points. The versioned, suffixed entry points
  were never documented and a leftover from a pre-virtualenv era. These entry
  points also created broken entry points in wheels, so removing them also
  removes a source of confusion for users (1632).
  Thanks obestwalter for the PR.

• pytest.skip() now raises an error when used to decorate a test function,
  as opposed to its original intent (to imperatively skip a test inside a test function). Previously
  this usage would cause the entire module to be skipped (607).
  Thanks omarkohl for the complete PR (1519_).

• Exit tests if a collection error occurs. A poll indicated most users will hit CTRL-C
  anyway as soon as they see collection errors, so pytest might as well make that the default behavior (1421).
  A --continue-on-collection-errors option has been added to restore the previous behaviour.
  Thanks olegpidsadnyi and omarkohl_ for the complete PR (1628_).

• Renamed the pytest pdb module (plugin) into debugging to avoid clashes with the builtin pdb module.

• Raise a helpful failure message when requesting a parametrized fixture at runtime,
  e.g. with request.getfixturevalue. Previously these parameters were simply
  never defined, so a fixture decorated like pytest.fixture(params=[0, 1, 2])
  only ran once (460).
  Thanks to nikratio for the bug report, RedBeardCode_ and tomviner_ for the PR.

• _pytest.monkeypatch.monkeypatch class has been renamed to _pytest.monkeypatch.MonkeyPatch
  so it doesn't conflict with the monkeypatch fixture.

• --exitfirst / -x can now be overridden by a following --maxfail=N
  and is just a synonym for --maxfail=1.

New Features

• Support nose-style __test__ attribute on methods of classes,
  including unittest-style Classes. If set to False, the test will not be
  collected.

• New doctest_namespace fixture for injecting names into the
  namespace in which doctests run.
  Thanks milliams_ for the complete PR (1428_).

• New --doctest-report option available to change the output format of diffs
  when running (failing) doctests (implements 1749).
  Thanks hartym for the PR.

• New name argument to pytest.fixture decorator which allows a custom name
  for a fixture (to solve the funcarg-shadowing-fixture problem).
  Thanks novas0x2a_ for the complete PR (1444_).

• New approx() function for easily comparing floating-point numbers in
  tests.
  Thanks kalekundert_ for the complete PR (1441_).

• Ability to add global properties in the final xunit output file by accessing
  the internal junitxml plugin (experimental).
  Thanks tareqalayan_ for the complete PR 1454_).

• New ExceptionInfo.match() method to match a regular expression on the
  string representation of an exception (372).
  Thanks omarkohl for the complete PR (1502_).

• __tracebackhide__ can now also be set to a callable which then can decide
  whether to filter the traceback based on the ExceptionInfo object passed
  to it. Thanks The-Compiler_ for the complete PR (1526_).

• New pytest_make_parametrize_id(config, val) hook which can be used by plugins to provide
  friendly strings for custom types.
  Thanks palaviv_ for the PR.

• capsys and capfd now have a disabled() context-manager method, which
  can be used to temporarily disable capture within a test.
  Thanks nicoddemus_ for the PR.

• New cli flag --fixtures-per-test: shows which fixtures are being used
  for each selected test item. Features doc strings of fixtures by default.
  Can also show where fixtures are defined if combined with -v.
  Thanks hackebrot_ for the PR.

• Introduce pytest command as recommended entry point. Note that py.test
  still works and is not scheduled for removal. Closes proposal
  1629. Thanks obestwalter and davehunt_ for the complete PR
  (1633_).

• New cli flags:

• --setup-plan: performs normal collection and reports
  the potential setup and teardown and does not execute any fixtures and tests;
• --setup-only: performs normal collection, executes setup and teardown of
  fixtures and reports them;
• --setup-show: performs normal test execution and additionally shows
  setup and teardown of fixtures;
• --keep-duplicates: py.test now ignores duplicated paths given in the command
  line. To retain the previous behavior where the same test could be run multiple
  times by specifying it in the command-line multiple times, pass the --keep-duplicates
  argument (1609_);

Thanks d6e, kvas-it, sallner, ioggstream and omarkohl_ for the PRs.

• New CLI flag --override-ini/-o: overrides values from the ini file.
  For example: "-o xfail_strict=True"'.
  Thanks blueyed_ and fengxx_ for the PR.

• New hooks:

• pytest_fixture_setup(fixturedef, request): executes fixture setup;
• pytest_fixture_post_finalizer(fixturedef): called after the fixture's
  finalizer and has access to the fixture's result cache.

Thanks d6e, sallner.

• Issue warnings for asserts whose test is a tuple literal. Such asserts will
  never fail because tuples are always truthy and are usually a mistake
  (see 1562). Thanks kvas-it, for the PR.

• Allow passing a custom debugger class (e.g. --pdbcls=IPython.core.debugger:Pdb).
  Thanks to anntzer_ for the PR.

Changes

• Plugins now benefit from assertion rewriting. Thanks
  sober7, nicoddemus and flub_ for the PR.

• Change report.outcome for xpassed tests to "passed" in non-strict
  mode and "failed" in strict mode. Thanks to hackebrot_ for the PR
  (1795) and gprasad84 for report (1546_).

• Tests marked with xfail(strict=False) (the default) now appear in
  JUnitXML reports as passing tests instead of skipped.
  Thanks to hackebrot_ for the PR (1795_).

• Highlight path of the file location in the error report to make it easier to copy/paste.
  Thanks suzaku_ for the PR (1778_).

• Fixtures marked with pytest.fixture can now use yield statements exactly like
  those marked with the pytest.yield_fixture decorator. This change renders
  pytest.yield_fixture deprecated and makes pytest.fixture with yield statements
  the preferred way to write teardown code (1461).
  Thanks csaftoiu for bringing this to attention and nicoddemus_ for the PR.

• Explicitly passed parametrize ids do not get escaped to ascii (1351).
  Thanks ceridwen for the PR.

• Fixtures are now sorted in the error message displayed when an unknown
  fixture is declared in a test function.
  Thanks nicoddemus_ for the PR.

• pytest_terminal_summary hook now receives the exitstatus
  of the test session as argument. Thanks blueyed_ for the PR (1809_).

• Parametrize ids can accept None as specific test id, in which case the
  automatically generated id for that argument will be used.
  Thanks palaviv_ for the complete PR (1468_).

• The parameter to xunit-style setup/teardown methods (setup_method,
  setup_module, etc.) is now optional and may be omitted.
  Thanks okken_ for bringing this to attention and nicoddemus_ for the PR.

• Improved automatic id generation selection in case of duplicate ids in
  parametrize.
  Thanks palaviv_ for the complete PR (1474_).

• Now pytest warnings summary is shown up by default. Added a new flag
  --disable-pytest-warnings to explicitly disable the warnings summary (1668_).

• Make ImportError during collection more explicit by reminding
  the user to check the name of the test module/package(s) (1426).
  Thanks omarkohl for the complete PR (1520_).

• Add build/ and dist/ to the default --norecursedirs list. Thanks
  mikofski_ for the report and tomviner_ for the PR (1544_).

• pytest.raises in the context manager form accepts a custom
  message to raise when no exception occurred.
  Thanks palaviv_ for the complete PR (1616_).

• conftest.py files now benefit from assertion rewriting; previously it
  was only available for test modules. Thanks flub, sober7 and
  nicoddemus_ for the PR (1619_).

• Text documents without any doctests no longer appear as "skipped".
  Thanks graingert_ for reporting and providing a full PR (1580_).

• Ensure that a module within a namespace package can be found when it
  is specified on the command line together with the --pyargs
  option. Thanks to taschini_ for the PR (1597_).

• Always include full assertion explanation during assertion rewriting. The previous behaviour was hiding
  sub-expressions that happened to be False, assuming this was redundant information.
  Thanks bagerard_ for reporting (1503). Thanks to davehunt and
  tomviner_ for the PR.

• OptionGroup.addoption() now checks if option names were already
  added before, to make it easier to track down issues like 1618_.
  Before, you only got exceptions later from argparse library,
  giving no clue about the actual reason for double-added options.

• yield-based tests are considered deprecated and will be removed in pytest-4.0.
  Thanks nicoddemus_ for the PR.

• [pytest] sections in setup.cfg files should now be named [tool:pytest]
  to avoid conflicts with other distutils commands (see 567). [pytest] sections in
  pytest.ini or tox.ini files are supported and unchanged.
  Thanks nicoddemus for the PR.

• Using pytest_funcarg__ prefix to declare fixtures is considered deprecated and will be
  removed in pytest-4.0 (1684).
  Thanks nicoddemus for the PR.

• Passing a command-line string to pytest.main() is considered deprecated and scheduled
  for removal in pytest-4.0. It is recommended to pass a list of arguments instead (1723_).

• Rename getfuncargvalue to getfixturevalue. getfuncargvalue is
  still present but is now considered deprecated. Thanks to RedBeardCode_ and tomviner_
  for the PR (1626_).

• optparse type usage now triggers DeprecationWarnings (1740_).

• optparse backward compatibility supports float/complex types (457_).

• Refined logic for determining the rootdir, considering only valid
  paths which fixes a number of issues: 1594, 1435 and 1471.
  Updated the documentation according to current behavior. Thanks to
  blueyed, davehunt_ and matthiasha_ for the PR.

• Always include full assertion explanation. The previous behaviour was hiding
  sub-expressions that happened to be False, assuming this was redundant information.
  Thanks bagerard_ for reporting (1503). Thanks to davehunt and
  tomviner_ for PR.

• Better message in case of not using parametrized variable (see 1539).
  Thanks to tramwaj29 for the PR.

• Updated docstrings with a more uniform style.

• Add stderr write for pytest.exit(msg) during startup. Previously the message was never shown.
  Thanks BeyondEvil_ for reporting 1210. Thanks to JonathonSonesen and
  tomviner_ for the PR.

• No longer display the incorrect test deselection reason (1372).
  Thanks ronnypfannschmidt for the PR.

• The --resultlog command line option has been deprecated: it is little used
  and there are more modern and better alternatives (see 830).
  Thanks nicoddemus for the PR.

• Improve error message with fixture lookup errors: add an 'E' to the first
  line and '>' to the rest. Fixes 717. Thanks blueyed for reporting and
  a PR, eolo999_ for the initial PR and tomviner_ for his guidance during
  EuroPython2016 sprint.

Bug Fixes

• Parametrize now correctly handles duplicated test ids.

• Fix internal error issue when the method argument is missing for
  teardown_method() (1605_).

• Fix exception visualization in case the current working directory (CWD) gets
  deleted during testing (1235). Thanks bukzor for reporting. PR by
  marscher_.

• Improve test output for logical expression with brackets (925).
  Thanks DRMacIver for reporting and RedBeardCode_ for the PR.

• Create correct diff for strings ending with newlines (1553).
  Thanks Vogtinator for reporting and RedBeardCode_ and
  tomviner_ for the PR.

• ConftestImportFailure now shows the traceback making it easier to
  identify bugs in conftest.py files (1516). Thanks txomon for
  the PR.

• Text documents without any doctests no longer appear as "skipped".
  Thanks graingert_ for reporting and providing a full PR (1580_).

• Fixed collection of classes with custom __new__ method.
  Fixes 1579. Thanks to Stranger6667 for the PR.

• Fixed scope overriding inside metafunc.parametrize (634).
  Thanks to Stranger6667 for the PR.

• Fixed the total tests tally in junit xml output (1798).
  Thanks to cryporchild for the PR.

• Fixed off-by-one error with lines from request.node.warn.
  Thanks to blueyed_ for the PR.

.. _1210: pytest-dev/pytest#1210
.. _1235: pytest-dev/pytest#1235
.. _1351: pytest-dev/pytest#1351
.. _1372: pytest-dev/pytest#1372
.. _1421: pytest-dev/pytest#1421
.. _1426: pytest-dev/pytest#1426
.. _1428: pytest-dev/pytest#1428
.. _1435: pytest-dev/pytest#1435
.. _1441: pytest-dev/pytest#1441
.. _1444: pytest-dev/pytest#1444
.. _1454: pytest-dev/pytest#1454
.. _1461: pytest-dev/pytest#1461
.. _1468: pytest-dev/pytest#1468
.. _1471: pytest-dev/pytest#1471
.. _1474: pytest-dev/pytest#1474
.. _1479: pytest-dev/pytest#1479
.. _1502: pytest-dev/pytest#1502
.. _1503: pytest-dev/pytest#1503
.. _1516: pytest-dev/pytest#1516
.. _1519: pytest-dev/pytest#1519
.. _1520: pytest-dev/pytest#1520
.. _1526: pytest-dev/pytest#1526
.. _1539: pytest-dev/pytest#1539
.. _1544: pytest-dev/pytest#1544
.. _1546: pytest-dev/pytest#1546
.. _1553: pytest-dev/pytest#1553
.. _1562: pytest-dev/pytest#1562
.. _1579: pytest-dev/pytest#1579
.. _1580: pytest-dev/pytest#1580
.. _1594: pytest-dev/pytest#1594
.. _1597: pytest-dev/pytest#1597
.. _1605: pytest-dev/pytest#1605
.. _1616: pytest-dev/pytest#1616
.. _1618: pytest-dev/pytest#1618
.. _1619: pytest-dev/pytest#1619
.. _1626: pytest-dev/pytest#1626
.. _1627: pytest-dev/pytest#1627
.. _1628: pytest-dev/pytest#1628
.. _1629: pytest-dev/pytest#1629
.. _1632: pytest-dev/pytest#1632
.. _1633: pytest-dev/pytest#1633
.. _1664: pytest-dev/pytest#1664
.. _1668: pytest-dev/pytest#1668
.. _1684: pytest-dev/pytest#1684
.. _1723: pytest-dev/pytest#1723
.. _1740: pytest-dev/pytest#1740
.. _1749: pytest-dev/pytest#1749
.. _1778: pytest-dev/pytest#1778
.. _1795: pytest-dev/pytest#1795
.. _1798: pytest-dev/pytest#1798
.. _1809: pytest-dev/pytest#1809
.. _372: pytest-dev/pytest#372
.. _457: pytest-dev/pytest#457
.. _460: pytest-dev/pytest#460
.. _567: pytest-dev/pytest#567
.. _607: pytest-dev/pytest#607
.. _634: pytest-dev/pytest#634
.. _717: pytest-dev/pytest#717
.. _830: pytest-dev/pytest#830
.. _925: pytest-dev/pytest#925

.. _anntzer: https://github.com/anntzer
.. _bagerard: https://github.com/bagerard
.. _BeyondEvil: https://github.com/BeyondEvil
.. _blueyed: https://github.com/blueyed
.. _ceridwen: https://github.com/ceridwen
.. _cryporchild: https://github.com/cryporchild
.. _csaftoiu: https://github.com/csaftoiu
.. _d6e: https://github.com/d6e
.. _davehunt: https://github.com/davehunt
.. _DRMacIver: https://github.com/DRMacIver
.. _eolo999: https://github.com/eolo999
.. _fengxx: https://github.com/fengxx
.. _flub: https://github.com/flub
.. _gprasad84: https://github.com/gprasad84
.. _graingert: https://github.com/graingert
.. _hartym: https://github.com/hartym
.. _JonathonSonesen: https://github.com/JonathonSonesen
.. _kalekundert: https://github.com/kalekundert
.. _kvas-it: https://github.com/kvas-it
.. _marscher: https://github.com/marscher
.. _mikofski: https://github.com/mikofski
.. _milliams: https://github.com/milliams
.. _nikratio: https://github.com/nikratio
.. _novas0x2a: https://github.com/novas0x2a
.. _obestwalter: https://github.com/obestwalter
.. _okken: https://github.com/okken
.. _olegpidsadnyi: https://github.com/olegpidsadnyi
.. _omarkohl: https://github.com/omarkohl
.. _palaviv: https://github.com/palaviv
.. _RedBeardCode: https://github.com/RedBeardCode
.. _sallner: https://github.com/sallner
.. _sober7: https://github.com/sober7
.. _Stranger6667: https://github.com/Stranger6667
.. _suzaku: https://github.com/suzaku
.. _tareqalayan: https://github.com/tareqalayan
.. _taschini: https://github.com/taschini
.. _tramwaj29: https://github.com/tramwaj29
.. _txomon: https://github.com/txomon
.. _Vogtinator: https://github.com/Vogtinator
.. _matthiasha: https://github.com/matthiasha

Once you have closed this pull request, I'll create seperate pull requests for every update as soon as I find them.

That's it for now!

Happy merging! 🤖