Update pytest to 3.6.3

[pyup-bot]

This PR updates pytest from 3.6.1 to 3.6.3.

Changelog

3.6.2

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

Bug Fixes
---------

- Fix regression in ``Node.add_marker`` by extracting the mark object of a
``MarkDecorator``. (`3555
<https://github.com/pytest-dev/pytest/issues/3555>`_)

- Warnings without ``location`` were reported as ``None``. This is corrected to
now report ``<undetermined location>``. (`3563
<https://github.com/pytest-dev/pytest/issues/3563>`_)

- Continue to call finalizers in the stack when a finalizer in a former scope
raises an exception. (`3569
<https://github.com/pytest-dev/pytest/issues/3569>`_)

- Fix encoding error with `print` statements in doctests (`3583
<https://github.com/pytest-dev/pytest/issues/3583>`_)


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

- Add documentation for the ``--strict`` flag. (`3549
<https://github.com/pytest-dev/pytest/issues/3549>`_)


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

- Update old quotation style to parens in fixture.rst documentation. (`3525
<https://github.com/pytest-dev/pytest/issues/3525>`_)

- Improve display of hint about ``--fulltrace`` with ``KeyboardInterrupt``.
(`3545 <https://github.com/pytest-dev/pytest/issues/3545>`_)

- pytest's testsuite is no longer runnable through ``python setup.py test`` --
instead invoke ``pytest`` or ``tox`` directly. (`3552
<https://github.com/pytest-dev/pytest/issues/3552>`_)

- Fix typo in documentation (`3567
<https://github.com/pytest-dev/pytest/issues/3567>`_)

Links

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

[codecov-io]

Codecov Report

Merging #28 into master will not change coverage.
The diff coverage is n/a.

@@         Coverage Diff          @@
##           master   #28   +/-   ##
====================================
  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 #29