Update hacking for Python33.1.1

The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.

Fix problems found.

Remove hacking and friends from lower-constraints, they are not needed
for installation.

Change-Id: I94aabb5b1ef43e8f0a5850620afce91ae0755e97

1 files changed, 2 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index e0594bc..2fd86ff 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,6 +47,7 @@ deps =
 
 [flake8]
 # E123, E125 skipped as they are invalid PEP-8.
+# W504 line break after binary operator
 show-source = True
-ignore = E123,E125
+ignore = E123,E125,W504
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build