Fix a typo, meant strictly lesser than 0.6 :<

jstasiak · jstasiak · commit dadbbfc9e178 · 2015-07-11T22:59:05.000+02:00
diff --git a/requirements-dev.txt b/requirements-dev.txt
@@ -5,7 +5,7 @@ enum34
 flake8
 flake8-blind-except
 # Upper bound because of https://github.com/public/flake8-import-order/issues/42
-flake8-import-order>=0.4.0, <=0.6.0
+flake8-import-order>=0.4.0, <0.6.0
 mock
 netifaces
 nose
