Add options to output filter to set timestamps

This commit adds 2 new options to subunit-output, --start-time and
--stop-time, to specify a timestamp for the start and end of a test
in the output.

1 files changed, 1 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 0de577e..38a7f83 100755
--- a/setup.py
+++ b/setup.py
@@ -12,6 +12,7 @@ else:
         'install_requires': [
             'extras',
             'testtools>=0.9.34',
+            'python-dateutil>=2.4.2',
         ],
         'tests_require': [
             'fixtures',