Log Message:
Updated py-test to 3.0.6.

3.0.6 (2017-01-29)
=======================

* pytest no longer generates ``PendingDeprecationWarning`` from its own \ 
operations, which was introduced by mistake in version ``3.0.5`` (`#2118`_).
  Thanks to `@nicoddemus`_ for the report and `@RonnyPfannschmidt`_ for the PR.

* pytest no longer recognizes coroutine functions as yield tests (`#2129`_).
  Thanks to `@malinoff`_ for the PR.

* Plugins loaded by the ``PYTEST_PLUGINS`` environment variable are now automatically
  considered for assertion rewriting (`#2185`_).
  Thanks `@nicoddemus`_ for the PR.

* Improve error message when pytest.warns fails (`#2150`_). The type(s) of the
  expected warnings and the list of caught warnings is added to the
  error message. Thanks `@lesteve`_ for the PR.

* Fix ``pytester`` internal plugin to work correctly with latest versions of
  ``zope.interface`` (`#1989`_). Thanks `@nicoddemus`_ for the PR.

* Assert statements of the ``pytester`` plugin again benefit from assertion \ 
rewriting (`#1920`_).
  Thanks `@RonnyPfannschmidt`_ for the report and `@nicoddemus`_ for the PR.

* Specifying tests with colons like ``test_foo.py::test_bar`` for tests in
  subdirectories with ini configuration files now uses the correct ini file
  (`#2148`_).  Thanks `@pelme`_.

* Fail ``testdir.runpytest().assert_outcomes()`` explicitly if the pytest
  terminal output it relies on is missing. Thanks to `@eli-b`_ for the PR.