Upgrading version to 0.4.2.

This is for a minor release cycle.

Author: dhermes

setup.py

@@ -22,7 +22,7 @@
 
 setup(
     name='gcloud',
-    version='0.4.1',
+    version='0.4.2',
     description='API Client library for Google Cloud',
     author='JJ Geewax',
     author_email='jj@geewax.org',