Fixed version in documentation, update copyright date.

docs/conf.py

@@ -50,16 +50,18 @@
 
 # General information about the project.
 project = 'dateutil'
-copyright = '2015, dateutil'
+copyright = '2016, 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 = '2.4.2'
+from dateutil import __version__ as VERSION  # Explicitly use a relative path
+
+version = VERSION
 # The full version, including alpha/beta/rc tags.
-release = '2.4.2'
+release = VERSION
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.