Merge #92

92: Update pytest to 5.1.2 r=rehandalal a=pyup-bot


This PR updates [pytest](https://pypi.org/project/pytest) from **5.1.1** to **5.1.2**.



<details>
  <summary>Changelog</summary>
  
  
   ### 5.1.2
   ```
   =========================

Bug Fixes
---------

- `2270 &lt;https://github.com/pytest-dev/pytest/issues/2270&gt;`_: Fixed ``self`` reference in function-scoped fixtures defined plugin classes: previously ``self``
  would be a reference to a *test* class, not the *plugin* class.


- `570 &lt;https://github.com/pytest-dev/pytest/issues/570&gt;`_: Fixed long standing issue where fixture scope was not respected when indirect fixtures were used during
  parametrization.


- `5782 &lt;https://github.com/pytest-dev/pytest/issues/5782&gt;`_: Fix decoding error when printing an error response from ``--pastebin``.


- `5786 &lt;https://github.com/pytest-dev/pytest/issues/5786&gt;`_: Chained exceptions in test and collection reports are now correctly serialized, allowing plugins like
  ``pytest-xdist`` to display them properly.


- `5792 &lt;https://github.com/pytest-dev/pytest/issues/5792&gt;`_: Windows: Fix error that occurs in certain circumstances when loading
  ``conftest.py`` from a working directory that has casing other than the one stored
  in the filesystem (e.g., ``c:\test`` instead of ``C:\test``).
   ```
   
  
</details>


 

<details>
  <summary>Links</summary>
  
  - PyPI: https://pypi.org/project/pytest
  - Changelog: https://pyup.io/changelogs/pytest/
  - Homepage: https://docs.pytest.org/en/latest/
</details>



Co-authored-by: pyup-bot <github-bot@pyup.io>

requirements-dev.txt

@@ -1,3 +1,3 @@
 -r requirements.txt
-pytest==5.1.1
+pytest==5.1.2
 pytest-cov==2.7.1