Bump version to 0.1.9.

TBR=sergiyb@chromium.org
BUG=

Review URL: https://codereview.chromium.org/2125153003 .

testing_support/__init__.py

diff --git a/testing_support/__init__.py b/testing_support/__init__.py
index d67c711..2d84dec 100644
--- a/testing_support/__init__.py
+++ b/testing_support/__init__.py
@@ -4,7 +4,7 @@
 
 """Utilities to support writing unittests for infra-related tools."""
 
-__version__ = "0.1.8"
+__version__ = '0.1.9'
 __author__ = 'The Chromium Infrastructure Team'
 __email__ = 'infra-dev@chromium.org'
 __url__ = 'https://chromium.googlesource.com/infra/testing/testing_support/'