Update hacking version
hacking version is managed in test-requirements.txt and the latest
version is 0.13.0 now.
However 0.13.0 is in very sorry shape as the
.
So this patch updates our test-requirements.txt to avoid using
0.13.0.
# be installed in a specific order.
#
# Hacking should appear first in case something else depends on pep8
-hacking<0.11,>=0.10.0
+hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
#
coverage>=4.0 # Apache-2.0
django-nose>=1.4.4 # BSD
