As per pytest-dev#5914 (comment)

Fixes pytest-dev#6257.
Via blueyed#132.

Use `dict.keys()` to work around `__iter__` not working with a
multiprocessing DictProxy.

Ref: python/cpython#17333
Fixes pytest-dev#6254.
Ref: kevlened/pytest-parallel#36

…le-exit-exc-upstream

main: wrap_session: handle exit.Exception with notify_exception

terminal: _get_main_color: help pytest-parallel

Co-Authored-By: Daniel Hahler <github@thequod.de>

Fix line detection for properties in doctest tests

Correct a typo in _pytest/config/__init__.py

`--keep-going` makes sense with `-W` to see all warnings/errors.

`{posargs:}` is useful for passing in custom args.

tox: docs: --keep-going and posargs

docs: add missing `log_cli` confval

Add link to testdir fixture in CHANGELOG entry

Preparing release version 5.3.1

Remove duplicated changelog entry for 5.3.1

Revert "A warning is now issued when assertions are made for `None`"

Now `tox -e docs` will also include the draft changelog for the
next version (locally only).

`CHANGELOG.rst` now only points to the changelog on READTHEDOCS so
sphinx diretives can be used.

Followup to pytest-dev#6272

…ev#6287)

docs: move changelog to docs/en and allow sphinx directives

Fix pytest-dev#6290

…-dev#6296)

Ensure cache supporting files still exist after --cache-clear

Remove outdated py2py3 example

As discussed in pytest-dev#3342, this
is the first step to make pytest support static typing fully

Convert pytest.py into a package

Fix typo in documentation of capfd fixture