Update pluggy to 0.6.0

[pyup-bot]

There's a new version of pluggy available.
You are currently using 0.3.1. I have updated it to 0.6.0

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

Changelog

0.6.0

---

• Add CI testing for the features, release, and master
  branches of pytest (PR 79_).
• Document public API for _Result objects passed to wrappers
  (PR 85_).
• Document and test hook LIFO ordering (PR 85_).
• Turn warnings into errors in test suite (PR 89_).
• Deprecate _Result.result (PR 88_).
• Convert _Multicall to a simple function distinguishing it from
  the legacy version (PR 90_).
• Resolve E741 errors (PR 96_).
• Test and bug fix for unmarked hook collection (PRs 97_ and
  102_).
• Drop support for EOL Python 2.6 and 3.3 (PR 103_).
• Fix inspect based arg introspection on py3.6 (PR 94_).

.. _79: pytest-dev/pluggy#79
.. _85: pytest-dev/pluggy#85
.. _88: pytest-dev/pluggy#88
.. _89: pytest-dev/pluggy#89
.. _90: pytest-dev/pluggy#90
.. _94: pytest-dev/pluggy#94
.. _96: pytest-dev/pluggy#96
.. _97: pytest-dev/pluggy#97
.. _102: pytest-dev/pluggy#102
.. _103: pytest-dev/pluggy#103

0.5.2

---

• fix bug where firstresult wrappers were being sent an incorrectly configured
  _Result (a list was set instead of a single value). Add tests to check for
  this as well as _Result.force_result() behaviour. Thanks to tgoodlet_
  for the PR 72_.

• fix incorrect getattr of DeprecationWarning from the warnings
  module. Thanks to nicoddemus_ for the PR 77_.

• hide pytest tracebacks in certain core routines. Thanks to
  nicoddemus_ for the PR 80_.

.. _72: pytest-dev/pluggy#72
.. _77: pytest-dev/pluggy#77
.. _80: pytest-dev/pluggy#80

0.5.1

---

• fix a bug and add tests for case where firstresult hooks return
  None results. Thanks to RonnyPfannschmidt_ and tgoodlet_
  for the issue (68) and PR (69) respectively.

.. _69: pytest-dev/pluggy#69
.. _68: https://github.com/pytest-dev/pluggy/issuses/68

0.5.0

---

• fix bug where callbacks for historic hooks would not be called for
  already registered plugins. Thanks vodik_ for the PR
  and hpk42_ for further fixes.

• fix 17_ by considering only actual functions for hooks
  this removes the ability to register arbitrary callable objects
  which at first glance is a reasonable simplification,
  thanks RonnyPfannschmidt_ for report and pr.

• fix 19: allow registering hookspecs from instances. The PR from
  tgoodlet also modernized the varnames implementation.

• resolve 32: split up the test set into multiple modules.
  Thanks to RonnyPfannschmidt for the PR and tgoodlet_ for
  the initial request.

• resolve 14: add full sphinx docs. Thanks to tgoodlet for
  PR 39_.

• add hook call mismatch warnings. Thanks to tgoodlet_ for the
  PR 42_.

• resolve 44: move to new-style classes. Thanks to MichalTHEDUDE
  for PR 46_.

• add baseline benchmarking/speed tests using pytest-benchmark
  in PR 54. Thanks to tgoodlet.

• update the README to showcase the API. Thanks to tgoodlet_ for the
  issue and PR 55_.

• deprecate __multicall__ and add a faster call loop implementation.
  Thanks to tgoodlet_ for PR 58_.

• raise a comprehensible error when a hookimpl is called with positional
  args. Thanks to RonnyPfannschmidt_ for the issue and tgoodlet_ for
  PR 60_.

• fix the firstresult test making it more complete
  and remove a duplicate of that test. Thanks to tgoodlet_
  for PR 62_.

.. _62: pytest-dev/pluggy#62
.. _60: pytest-dev/pluggy#60
.. _58: pytest-dev/pluggy#58
.. _55: pytest-dev/pluggy#55
.. _54: pytest-dev/pluggy#54
.. _46: pytest-dev/pluggy#46
.. _44: pytest-dev/pluggy#44
.. _42: pytest-dev/pluggy#42
.. _39: pytest-dev/pluggy#39
.. _32: pytest-dev/pluggy#32
.. _19: pytest-dev/pluggy#19
.. _17: pytest-dev/pluggy#17
.. _14: pytest-dev/pluggy#14

0.4.0

---

• add has_plugin(name) method to pluginmanager. thanks nicoddemus_.

• fix 11: make plugin parsing more resilient against exceptions
  from __getattr__ functions. Thanks nicoddemus.

• fix issue 4_: specific HookCallError exception for when a hook call
  provides not enough arguments.

• better error message when loading setuptools entrypoints fails
  due to a VersionConflict. Thanks blueyed_.

.. _11: pytest-dev/pluggy#11
.. _4: pytest-dev/pluggy#4

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

Happy merging! 🤖

[pyup-bot]

Closing this in favor of #220