Log Message:
py-test: updated to 3.8.2

pytest 3.8.2:

Deprecations and Removals
* The item parameter of pytest_warning_captured hook is now documented as \ 
deprecated. We realized only after the 3.8 release that this parameter is \ 
incompatible with pytest-xdist.

Our policy is to not deprecate features during bugfix releases, but in this case \ 
we believe it makes sense as we are only documenting it as deprecated, without \ 
issuing warnings which might potentially break test suites. This will get the \ 
word out that hook implementers should not use this parameter at all.

In a future release item will always be None and will emit a proper warning when \ 
a hook implementation makes use of it.

Bug Fixes
* Fix reload on assertion rewritten modules.
* The .user_properties attribute of TestReport objects is a list of (name, \ 
value) tuples, but could sometimes be instantiated as a tuple of tuples. It is \ 
now always a list.
* No longer issue warnings about using pytest_plugins in non-top-level \ 
directories when using --pyargs: the current --pyargs mechanism is not reliable \ 
and might give false negatives.
* Exclude empty reports for passed tests when -rP option is used.
* Improve error message when an invalid Python expression is passed to the -m option.
* MonkeyPatch.setenv and MonkeyPatch.delenv issue a warning if the environment \ 
variable name is not str on Python 2.

In Python 2, adding unicode keys to os.environ causes problems with subprocess \ 
(and possible other modules), making this a subtle bug specially susceptible \ 
when used with from __future__ import unicode_literals.

Improved Documentation
* Add possible values for fixture scope to docs.