Update pluggy to 0.13.1

[pyup-bot]

This PR updates pluggy from 0.6.0 to 0.13.1.

Changelog

0.13.1

==========================

Trivial/Internal Changes
------------------------

- `236 <https://github.com/pytest-dev/pluggy/pull/236>`_: Improved documentation, especially with regard to references.

0.13.0

==========================

Trivial/Internal Changes
------------------------

- `222 <https://github.com/pytest-dev/pluggy/issues/222>`_: Replace ``importlib_metadata`` backport with ``importlib.metadata`` from the
standard library on Python 3.8+.

0.12.0

==========================

Features
--------

- `215 <https://github.com/pytest-dev/pluggy/issues/215>`_: Switch from ``pkg_resources`` to ``importlib-metadata`` for entrypoint detection for improved performance and import time.  This time with ``.egg`` support.

0.11.0

==========================

Bug Fixes
---------

- `205 <https://github.com/pytest-dev/pluggy/issues/205>`_: Revert changes made in 0.10.0 release breaking ``.egg`` installs.

0.10.0

==========================

Features
--------

- `199 <https://github.com/pytest-dev/pluggy/issues/199>`_: Switch from ``pkg_resources`` to ``importlib-metadata`` for entrypoint detection for improved performance and import time.

0.9.0

=========================

Features
--------

- `189 <https://github.com/pytest-dev/pluggy/issues/189>`_: ``PluginManager.load_setuptools_entrypoints`` now accepts a ``name`` parameter that when given will
load only entry points with that name.

``PluginManager.load_setuptools_entrypoints`` also now returns the number of plugins loaded by the
call, as opposed to the number of all plugins loaded by all calls to this method.



Bug Fixes
---------

- `187 <https://github.com/pytest-dev/pluggy/issues/187>`_: Fix internal ``varnames`` function for PyPy3.

0.8.1

=========================

Trivial/Internal Changes
------------------------

- `166 <https://github.com/pytest-dev/pluggy/issues/166>`_: Add ``stacklevel=2`` to implprefix warning so that the reported location of warning is the caller of PluginManager.

0.8.0

=========================

Features
--------

- `177 <https://github.com/pytest-dev/pluggy/issues/177>`_: Add ``get_hookimpls()`` method to hook callers.



Trivial/Internal Changes
------------------------

- `165 <https://github.com/pytest-dev/pluggy/issues/165>`_: Add changelog in long package description and documentation.


- `172 <https://github.com/pytest-dev/pluggy/issues/172>`_: Add a test exemplifying the opt-in nature of spec defined args.


- `57 <https://github.com/pytest-dev/pluggy/issues/57>`_: Encapsulate hook specifications in a type for easier introspection.

0.7.1

=========================

Deprecations and Removals
-------------------------

- `116 <https://github.com/pytest-dev/pluggy/issues/116>`_: Deprecate the ``implprefix`` kwarg to ``PluginManager`` and instead
expect users to start using explicit ``HookimplMarker`` everywhere.



Features
--------

- `122 <https://github.com/pytest-dev/pluggy/issues/122>`_: Add ``.plugin`` member to ``PluginValidationError`` to access failing plugin during post-mortem.


- `138 <https://github.com/pytest-dev/pluggy/issues/138>`_: Add per implementation warnings support for hookspecs allowing for both
deprecation and future warnings of legacy and (future) experimental hooks
respectively.



Bug Fixes
---------

- `110 <https://github.com/pytest-dev/pluggy/issues/110>`_: Fix a bug where ``_HookCaller.call_historic()`` would call the ``proc``
arg even when the default is ``None`` resulting in a ``TypeError``.

- `160 <https://github.com/pytest-dev/pluggy/issues/160>`_: Fix problem when handling ``VersionConflict`` errors when loading setuptools plugins.



Improved Documentation
----------------------

- `123 <https://github.com/pytest-dev/pluggy/issues/123>`_: Document how exceptions are handled and how the hook call loop
terminates immediately on the first error which is then delivered
to any surrounding wrappers.


- `136 <https://github.com/pytest-dev/pluggy/issues/136>`_: Docs rework including a much better introduction and comprehensive example
set for new users. A big thanks goes out to obestwalter for the great work!



Trivial/Internal Changes
------------------------

- `117 <https://github.com/pytest-dev/pluggy/issues/117>`_: Break up the main monolithic package modules into separate modules by concern


- `131 <https://github.com/pytest-dev/pluggy/issues/131>`_: Automate ``setuptools`` wheels building and PyPi upload using TravisCI.


- `153 <https://github.com/pytest-dev/pluggy/issues/153>`_: Reorganize tests more appropriately by modules relating to each
internal component/feature. This is in an effort to avoid (future)
duplication and better separation of concerns in the test set.


- `156 <https://github.com/pytest-dev/pluggy/issues/156>`_: Add ``HookImpl.__repr__()`` for better debugging.


- `66 <https://github.com/pytest-dev/pluggy/issues/66>`_: Start using ``towncrier`` and a custom ``tox`` environment to prepare releases!

0.7.0

=========================

* `160 <https://github.com/pytest-dev/pluggy/issues/160>`_: We discovered a deployment issue so this version was never released to PyPI, only the tag exists.

Links

• PyPI: https://pypi.org/project/pluggy
• Changelog: https://pyup.io/changelogs/pluggy/
• Repo: https://github.com/pytest-dev/pluggy

[codecov-io]

Codecov Report

Merging #141 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #141   +/-   ##
=====================================
  Coverage      30%    30%           
=====================================
  Files           3      3           
  Lines          10     10           
=====================================
  Hits            3      3           
  Misses          7      7

---

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[pyup-bot]

Closing this in favor of #251