Now depends on dateutil-2.1 which supports Py2.6, 2.7 and 3.2+. Closes #915

requirements/default-py3k.txt

@@ -1,4 +1,4 @@
 billiard>=2.7.3.12
-python-dateutil>=2.0
+python-dateutil>=2.1
 pytz
 kombu>=2.3

requirements/default.txt

@@ -1,3 +1,3 @@
 billiard>=2.7.3.12
-python-dateutil>=1.5,<2.0
+python-dateutil>=2.1
 kombu>=2.3.1,<3.0

setup.cfg

@@ -17,6 +17,6 @@ upload-dir = docs/.build/html
 requires = uuid
            importlib
            billiard>=2.7.3.12
-           python-dateutil >= 1.5
+           python-dateutil >= 2.1
            kombu >= 2.3.1
            ordereddict