diff --git a/flake8/main/application.py b/flake8/main/application.py
index e41a6c2..6739216 100644
--- a/flake8/main/application.py
+++ b/flake8/main/application.py
@@ -3,6 +3,7 @@ from __future__ import print_function
 
 import logging
 import sys
+import time
 
 import flake8
 from flake8 import checker
@@ -28,6 +29,10 @@ class Application(object):
         :param str version:
             The version of the program/application we're executing.
         """
+        #: The timestamp when the Application instance was instantiated.
+        self.start_time = time.time()
+        #: The timestamp when the Application finished reported errors.
+        self.end_time = None
         #: The name of the program being run
         self.program = program
         #: The version of the program being run
@@ -254,6 +259,7 @@ class Application(object):
         self.initialize(argv)
         self.run_checks()
         self.report_errors()
+        self.end_time = time.time()
 
     def run(self, argv=None):
         # type: (Union[NoneType, List[str]]) -> NoneType
diff --git a/flake8/plugins/manager.py b/flake8/plugins/manager.py
index dffc2f6..d08d542 100644
--- a/flake8/plugins/manager.py
+++ b/flake8/plugins/manager.py
@@ -2,12 +2,12 @@
 import collections
 import logging
 
+import pkg_resources
+
 from flake8 import exceptions
 from flake8 import utils
 from flake8.plugins import notifier
 
-import pkg_resources
-
 LOG = logging.getLogger(__name__)
 
 __all__ = (
diff --git a/flake8/plugins/pyflakes.py b/flake8/plugins/pyflakes.py
index 7025baa..72d45fa 100644
--- a/flake8/plugins/pyflakes.py
+++ b/flake8/plugins/pyflakes.py
@@ -11,11 +11,11 @@ else:
     demandimport.disable()
 import os
 
-from flake8 import utils
-
 import pyflakes
 import pyflakes.checker
 
+from flake8 import utils
+
 
 def patch_pyflakes():
     """Add error codes to Pyflakes messages."""
diff --git a/tests/integration/test_aggregator.py b/tests/integration/test_aggregator.py
index d0a7971..929bdbf 100644
--- a/tests/integration/test_aggregator.py
+++ b/tests/integration/test_aggregator.py
@@ -1,12 +1,12 @@
 """Test aggregation of config files and command-line options."""
 import os
 
+import pytest
+
 from flake8.main import options
 from flake8.options import aggregator
 from flake8.options import manager
 
-import pytest
-
 CLI_SPECIFIED_CONFIG = 'tests/fixtures/config_files/cli-specified.ini'
 
 
diff --git a/tests/unit/test_base_formatter.py b/tests/unit/test_base_formatter.py
index a23a9cb..dc4a95c 100644
--- a/tests/unit/test_base_formatter.py
+++ b/tests/unit/test_base_formatter.py
@@ -1,13 +1,12 @@
 """Tests for the BaseFormatter object."""
 import optparse
 
+import mock
+import pytest
+
 from flake8 import style_guide
 from flake8.formatting import base
 
-import mock
-
-import pytest
-
 
 def options(**kwargs):
     """Create an optparse.Values instance."""
diff --git a/tests/unit/test_checker_manager.py b/tests/unit/test_checker_manager.py
index 5b91204..8240723 100644
--- a/tests/unit/test_checker_manager.py
+++ b/tests/unit/test_checker_manager.py
@@ -1,12 +1,11 @@
 """Tests for the Manager object for FileCheckers."""
 import errno
 
-from flake8 import checker
-
 import mock
-
 import pytest
 
+from flake8 import checker
+
 
 def style_guide_mock(**kwargs):
     """Create a mock StyleGuide object."""
diff --git a/tests/unit/test_config_file_finder.py b/tests/unit/test_config_file_finder.py
index 2c56685..2e1a1e5 100644
--- a/tests/unit/test_config_file_finder.py
+++ b/tests/unit/test_config_file_finder.py
@@ -3,12 +3,11 @@ import configparser
 import os
 import sys
 
-from flake8.options import config
-
 import mock
-
 import pytest
 
+from flake8.options import config
+
 CLI_SPECIFIED_FILEPATH = 'tests/fixtures/config_files/cli-specified.ini'
 BROKEN_CONFIG_PATH = 'tests/fixtures/config_files/broken.ini'
 
diff --git a/tests/unit/test_merged_config_parser.py b/tests/unit/test_merged_config_parser.py
index baaa57a..eb57802 100644
--- a/tests/unit/test_merged_config_parser.py
+++ b/tests/unit/test_merged_config_parser.py
@@ -1,13 +1,12 @@
 """Unit tests for flake8.options.config.MergedConfigParser."""
 import os
 
+import mock
+import pytest
+
 from flake8.options import config
 from flake8.options import manager
 
-import mock
-
-import pytest
-
 
 @pytest.fixture
 def optmanager():
diff --git a/tests/unit/test_notifier.py b/tests/unit/test_notifier.py
index 8c001da..6a162cf 100644
--- a/tests/unit/test_notifier.py
+++ b/tests/unit/test_notifier.py
@@ -1,8 +1,8 @@
 """Unit tests for the Notifier object."""
-from flake8.plugins import notifier
-
 import pytest
 
+from flake8.plugins import notifier
+
 
 class _Listener(object):
     def __init__(self, error_code):
diff --git a/tests/unit/test_option.py b/tests/unit/test_option.py
index 45f9be7..67e2255 100644
--- a/tests/unit/test_option.py
+++ b/tests/unit/test_option.py
@@ -1,10 +1,9 @@
 """Unit tests for flake8.options.manager.Option."""
-from flake8.options import manager
-
 import mock
-
 import pytest
 
+from flake8.options import manager
+
 
 def test_to_optparse():
     """Test conversion to an optparse.Option class."""
diff --git a/tests/unit/test_option_manager.py b/tests/unit/test_option_manager.py
index 0086585..53e8bf1 100644
--- a/tests/unit/test_option_manager.py
+++ b/tests/unit/test_option_manager.py
@@ -2,10 +2,10 @@
 import optparse
 import os
 
-from flake8.options import manager
-
 import pytest
 
+from flake8.options import manager
+
 TEST_VERSION = '3.0.0b1'
 
 
diff --git a/tests/unit/test_plugin.py b/tests/unit/test_plugin.py
index d3d1185..f69bc05 100644
--- a/tests/unit/test_plugin.py
+++ b/tests/unit/test_plugin.py
@@ -1,13 +1,12 @@
 """Tests for flake8.plugins.manager.Plugin."""
 import optparse
 
+import mock
+import pytest
+
 from flake8 import exceptions
 from flake8.plugins import manager
 
-import mock
-
-import pytest
-
 
 def test_load_plugin_fallsback_on_old_setuptools():
     """Verify we fallback gracefully to on old versions of setuptools."""
diff --git a/tests/unit/test_plugin_manager.py b/tests/unit/test_plugin_manager.py
index 5a50386..8991b96 100644
--- a/tests/unit/test_plugin_manager.py
+++ b/tests/unit/test_plugin_manager.py
@@ -1,8 +1,8 @@
 """Tests for flake8.plugins.manager.PluginManager."""
-from flake8.plugins import manager
-
 import mock
 
+from flake8.plugins import manager
+
 
 def create_entry_point_mock(name):
     """Create a mocked EntryPoint."""
diff --git a/tests/unit/test_plugin_type_manager.py b/tests/unit/test_plugin_type_manager.py
index fb17a37..186c2e3 100644
--- a/tests/unit/test_plugin_type_manager.py
+++ b/tests/unit/test_plugin_type_manager.py
@@ -1,13 +1,12 @@
 """Tests for flake8.plugins.manager.PluginTypeManager."""
 import collections
 
+import mock
+import pytest
+
 from flake8 import exceptions
 from flake8.plugins import manager
 
-import mock
-
-import pytest
-
 TEST_NAMESPACE = "testing.plugin-type-manager"
 
 
diff --git a/tests/unit/test_style_guide.py b/tests/unit/test_style_guide.py
index 4aa3c54..3d05528 100644
--- a/tests/unit/test_style_guide.py
+++ b/tests/unit/test_style_guide.py
@@ -1,14 +1,13 @@
 """Tests for the flake8.style_guide.StyleGuide class."""
 import optparse
 
+import mock
+import pytest
+
 from flake8 import style_guide
 from flake8.formatting import base
 from flake8.plugins import notifier
 
-import mock
-
-import pytest
-
 
 def create_options(**kwargs):
     """Create and return an instance of optparse.Values."""
diff --git a/tests/unit/test_utils.py b/tests/unit/test_utils.py
index 54aa3a7..062f7f9 100644
--- a/tests/unit/test_utils.py
+++ b/tests/unit/test_utils.py
@@ -1,13 +1,11 @@
 """Tests for flake8's utils module."""
 import os
 
-from flake8 import utils
-from flake8.plugins import manager as plugin_manager
-
 import mock
-
 import pytest
 
+from flake8 import utils
+from flake8.plugins import manager as plugin_manager
 
 RELATIVE_PATHS = ["flake8", "pep8", "pyflakes", "mccabe"]
 
diff --git a/tox.ini b/tox.ini
index 9ba3f2c..c17f025 100644
--- a/tox.ini
+++ b/tox.ini
@@ -121,3 +121,5 @@ ignore = D203
 # :-(
 exclude = .git,__pycache__,docs/source/conf.py,old,build,dist,tests/fixtures/
 max-complexity = 10
+import-order-style = google
+application-import-names = flake8