Log Message:
Pytest 3.2.1
Bug Fixes:
* Fixed small terminal glitch when collecting a single test item.
* Correctly consider / as the file separator to automatically mark plugin files \ 
for rewrite on Windows.
* Properly escape test names when setting PYTEST_CURRENT_TEST environment variable.
* Fix error on Windows and Python 3.6+ when sys.stdout has been replaced with a \ 
stream-like object which does not implement the full io module buffer protocol. \ 
In particular this affects pytest-xdist users on the aforementioned platform.

Improved Documentation
* Explicitly document which pytest features work with unittest.