diff --git a/_pytest/logging.py b/_pytest/logging.py
index d3ac81e65..7234bdeb0 100644
--- a/_pytest/logging.py
+++ b/_pytest/logging.py
@@ -1,3 +1,4 @@
+""" Access and control log capturing. """
 from __future__ import absolute_import, division, print_function
 
 import logging
diff --git a/_pytest/main.py b/_pytest/main.py
index 97c6e276c..359945175 100644
--- a/_pytest/main.py
+++ b/_pytest/main.py
@@ -177,7 +177,7 @@ def _in_venv(path):
     """Attempts to detect if ``path`` is the root of a Virtual Environment by
     checking for the existence of the appropriate activate script"""
     bindir = path.join('Scripts' if sys.platform.startswith('win') else 'bin')
-    if not bindir.exists():
+    if not bindir.isdir():
         return False
     activates = ('activate', 'activate.csh', 'activate.fish',
                  'Activate', 'Activate.bat', 'Activate.ps1')
diff --git a/_pytest/python_api.py b/_pytest/python_api.py
index 541371449..3dce7f6b4 100644
--- a/_pytest/python_api.py
+++ b/_pytest/python_api.py
@@ -2,7 +2,8 @@ import math
 import sys
 
 import py
-from six.moves import zip
+from six.moves import zip, filterfalse
+from more_itertools.more import always_iterable
 
 from _pytest.compat import isclass
 from _pytest.outcomes import fail
@@ -566,14 +567,10 @@ def raises(expected_exception, *args, **kwargs):
 
     """
     __tracebackhide__ = True
-    msg = ("exceptions must be old-style classes or"
-           " derived from BaseException, not %s")
-    if isinstance(expected_exception, tuple):
-        for exc in expected_exception:
-            if not isclass(exc):
-                raise TypeError(msg % type(exc))
-    elif not isclass(expected_exception):
-        raise TypeError(msg % type(expected_exception))
+    for exc in filterfalse(isclass, always_iterable(expected_exception)):
+        msg = ("exceptions must be old-style classes or"
+               " derived from BaseException, not %s")
+        raise TypeError(msg % type(exc))
 
     message = "DID NOT RAISE {0}".format(expected_exception)
     match_expr = None
diff --git a/changelog/3209.doc.rst b/changelog/3209.doc.rst
new file mode 100644
index 000000000..84e165805
--- /dev/null
+++ b/changelog/3209.doc.rst
@@ -0,0 +1 @@
+Add logging plugin to plugins list.
\ No newline at end of file
diff --git a/changelog/3241.bugfix.rst b/changelog/3241.bugfix.rst
new file mode 100644
index 000000000..2b8b07d83
--- /dev/null
+++ b/changelog/3241.bugfix.rst
@@ -0,0 +1,2 @@
+Refactor check of bindir from ``exists`` to ``isdir`` regarding `#3241 <https://github.com/pytest-dev/pytest/issues/3241>`_.
+
diff --git a/changelog/3265.trivial.rst b/changelog/3265.trivial.rst
new file mode 100644
index 000000000..b4ad22ecf
--- /dev/null
+++ b/changelog/3265.trivial.rst
@@ -0,0 +1 @@
+``pytest`` now depends on the `more_itertools <https://github.com/erikrose/more-itertools>`_ package.
diff --git a/doc/en/plugins.rst b/doc/en/plugins.rst
index 400418aee..2a9fff81b 100644
--- a/doc/en/plugins.rst
+++ b/doc/en/plugins.rst
@@ -148,6 +148,7 @@ in the `pytest repository <https://github.com/pytest-dev/pytest>`_.
     _pytest.resultlog
     _pytest.runner
     _pytest.main
+    _pytest.logging
     _pytest.skipping
     _pytest.terminal
     _pytest.tmpdir
diff --git a/setup.py b/setup.py
index 78b3ebc5e..1cbabd72e 100644
--- a/setup.py
+++ b/setup.py
@@ -60,6 +60,7 @@ def main():
         'six>=1.10.0',
         'setuptools',
         'attrs>=17.4.0',
+        'more_itertools>=4.0.0',
     ]
     # if _PYTEST_SETUP_SKIP_PLUGGY_DEP is set, skip installing pluggy;
     # used by tox.ini to test with pluggy master