Prepare 2.4.0
updated the NEWS file, and bumped the versions
diff --git a/docs/conf.py b/docs/conf.py
index 367cc44..09cc424 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -50,16 +50,16 @@
# General information about the project.
project = 'dateutil'
-copyright = '2014, dateutil'
+copyright = '2015, dateutil'
# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
-version = '2.3'
+version = '2.4.0'
# The full version, including alpha/beta/rc tags.
-release = '2.3'
+release = '2.4.0'
# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.