Update pycodestyle to 2.3.1

[pyup-bot]

There's a new version of pycodestyle available.
You are currently using 2.0.0. I have updated it to 2.3.1

These links might come in handy: PyPI | Changelog | Docs

Changelog

2.3.1

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Bugs:

• Fix regression in detection of E302 and E306; 618, 620

2.3.0

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New Checks:

• Add E722 warning for bare except clauses
• Report E704 for async function definitions (async def)

Bugs:

• Fix another E305 false positive for variables beginning with "class" or
  "def"
• Fix detection of multiple spaces between async and def
• Fix handling of variable annotations. Stop reporting E701 on Python 3.6 for
  variable annotations.

2.2.0

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Announcements:

• Added Make target to obtain proper tarball file permissions; 599

Bugs:

• Fixed E305 regression caused by 400; 593

2.1.0

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Announcements:

• Change all references to the pep8 project to say pycodestyle; 530

Changes:

• Report E302 for blank lines before an "async def"; 556
• Update our list of tested and supported Python versions which are 2.6, 2.7,
  3.2, 3.3, 3.4 and 3.5 as well as the nightly Python build and PyPy.
• Report E742 and E743 for functions and classes badly named 'l', 'O', or 'I'.
• Report E741 on 'global' and 'nonlocal' statements, as well as prohibited
  single-letter variables.
• Deprecated use of [pep8] section name in favor of [pycodestyle]; 591
• Report E722 when bare except clause is used; 579

Bugs:

• Fix opt_type AssertionError when using Flake8 2.6.2 and pycodestyle; 561
• Require two blank lines after toplevel def, class; 536
• Remove accidentally quadratic computation based on the number of colons. This
  will make pycodestyle faster in some cases; 314

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖

[codecov]

Codecov Report

Merging #3249 into master will not change coverage.
The diff coverage is 89.13%.

@@           Coverage Diff           @@
##           master    #3249   +/-   ##
=======================================
  Coverage   88.21%   88.21%           
=======================================
  Files         320      320           
  Lines       33293    33293           
=======================================
  Hits        29369    29369           
  Misses       3924     3924

Impacted Files	Coverage Δ
master/buildbot/status/master.py	46.39% <0%> (ø)	⬆️
worker/buildbot_worker/pb.py	77.85% <0%> (ø)	⬆️
master/buildbot/process/properties.py	96.22% <100%> (ø)	⬆️
master/buildbot/util/pathmatch.py	96% <100%> (ø)	⬆️
master/buildbot/db/buildsets.py	96.06% <100%> (ø)	⬆️
master/buildbot/config.py	98.68% <100%> (ø)	⬆️
master/buildbot/process/buildstep.py	90.8% <100%> (ø)	⬆️
master/buildbot/util/__init__.py	94.56% <100%> (ø)	⬆️
master/buildbot/data/forceschedulers.py	93.65% <100%> (ø)	⬆️
master/buildbot/process/botmaster.py	93.71% <100%> (ø)	⬆️
... and 1 more

---

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[seankelly]

:)

Bit overeager on the replacement here.

[tardyp]

arg.