Merge #178

178: Update sybil to 2.0.1 r=aragilar a=pyup-bot


This PR updates [sybil](https://pypi.org/project/sybil) from **1.4.0** to **2.0.1**.



<details>
  <summary>Changelog</summary>
  
  
   ### 2.0.1
   ```
   -------------------

- Make :class:`~sybil.parsers.doctest.DocTestParser` more permissive with respect
  to tabs in documents. Tabs that aren&#39;t in the doctest block not longer cause
  parsing of the document to fail.
   ```
   
  
  
   ### 2.0.0
   ```
   -------------------

- Drop support for nose.

- Handle encoded data returned by doctest execution on Python 2.
   ```
   
  
</details>


 

<details>
  <summary>Links</summary>
  
  - PyPI: https://pypi.org/project/sybil
  - Changelog: https://pyup.io/changelogs/sybil/
  - Repo: https://github.com/cjw296/sybil
</details>



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

test-requirements.txt

@@ -4,4 +4,4 @@ pytest-cov==2.10.1
 #pytest-mpl
 #pytest-regtest
 #pytest-xdist
-sybil==1.4.0
+sybil==2.0.1