Update pytest to 3.8.2

[pyup-bot]

This PR updates pytest from 3.8.1 to 3.8.2.

Changelog

### 3.8.2 ``` ========================= Deprecations and Removals ------------------------- - `4036 <https://github.com/pytest-dev/pytest/issues/4036>`_: The ``item`` parameter of ``pytest_warning_captured`` hook is now documented as deprecated. We realized only after the ``3.8`` release that this parameter is incompatible with ``pytest-xdist``. Our policy is to not deprecate features during bugfix releases, but in this case we believe it makes sense as we are only documenting it as deprecated, without issuing warnings which might potentially break test suites. This will get the word out that hook implementers should not use this parameter at all. In a future release ``item`` will always be ``None`` and will emit a proper warning when a hook implementation makes use of it. Bug Fixes --------- - `3539 <https://github.com/pytest-dev/pytest/issues/3539>`_: Fix reload on assertion rewritten modules. - `4034 <https://github.com/pytest-dev/pytest/issues/4034>`_: The ``.user_properties`` attribute of ``TestReport`` objects is a list of (name, value) tuples, but could sometimes be instantiated as a tuple of tuples. It is now always a list. - `4039 <https://github.com/pytest-dev/pytest/issues/4039>`_: No longer issue warnings about using ``pytest_plugins`` in non-top-level directories when using ``--pyargs``: the current ``--pyargs`` mechanism is not reliable and might give false negatives. - `4040 <https://github.com/pytest-dev/pytest/issues/4040>`_: Exclude empty reports for passed tests when ``-rP`` option is used. - `4051 <https://github.com/pytest-dev/pytest/issues/4051>`_: Improve error message when an invalid Python expression is passed to the ``-m`` option. - `4056 <https://github.com/pytest-dev/pytest/issues/4056>`_: ``MonkeyPatch.setenv`` and ``MonkeyPatch.delenv`` issue a warning if the environment variable name is not ``str`` on Python 2. In Python 2, adding ``unicode`` keys to ``os.environ`` causes problems with ``subprocess`` (and possible other modules), making this a subtle bug specially susceptible when used with ``from __future__ import unicode_literals``. Improved Documentation ---------------------- - `3928 <https://github.com/pytest-dev/pytest/issues/3928>`_: Add possible values for fixture scope to docs. ```

Links

- PyPI: https://pypi.org/project/pytest - Changelog: https://pyup.io/changelogs/pytest/ - Homepage: https://docs.pytest.org/en/latest/

[codecov[bot]]

Codecov Report

Merging #42 into master will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #42   +/-   ##
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  Coverage     100%   100%           
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  Files           4      4           
  Lines         109    109           
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  Hits          109    109

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