Update pytest to 3.0.6

[pyup-bot]

There's a new version of pytest available.
You are currently using 3.0.5. I have updated it to 3.0.6

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

Changelog

3.0.6.dev0

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

• pytest no longer generates PendingDeprecationWarning from its own operations, which was introduced by mistake in version 3.0.5 (2118).
  Thanks to nicoddemus for the report and RonnyPfannschmidt_ for the PR.

• pytest no longer recognizes coroutine functions as yield tests (2129).
  Thanks to malinoff for the PR.

• Plugins loaded by the PYTEST_PLUGINS environment variable are now automatically
  considered for assertion rewriting (2185).
  Thanks nicoddemus for the PR.

• Improve error message when pytest.warns fails (2150). The type(s) of the
  expected warnings and the list of caught warnings is added to the
  error message. Thanks lesteve for the PR.

• Fix pytester internal plugin to work correctly with latest versions of
  zope.interface (1989). Thanks nicoddemus for the PR.

• Assert statements of the pytester plugin again benefit from assertion rewriting (1920).
  Thanks RonnyPfannschmidt for the report and nicoddemus_ for the PR.

• Specifying tests with colons like test_foo.py::test_bar for tests in
  subdirectories with ini configuration files now uses the correct ini file
  (2148). Thanks pelme.

• Fail testdir.runpytest().assert_outcomes() explicitly if the pytest
  terminal output it relies on is missing. Thanks to eli-b_ for the PR.

.. _lesteve: https://github.com/lesteve
.. _malinoff: https://github.com/malinoff
.. _pelme: https://github.com/pelme
.. _eli-b: https://github.com/eli-b

.. _2118: pytest-dev/pytest#2118

.. _1989: pytest-dev/pytest#1989
.. _1920: pytest-dev/pytest#1920
.. _2129: pytest-dev/pytest#2129
.. _2148: pytest-dev/pytest#2148
.. _2150: pytest-dev/pytest#2150
.. _2185: pytest-dev/pytest#2185

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 #115