Bump version number so PyPI gets updated referers.json.

Author: donspaulding

python/setup.py

@@ -6,7 +6,7 @@
 
 setup(
     name='referer-parser',
-    version="0.4.0",
+    version="0.4.1",
     long_description=open(readme_pth).read(),
     packages=find_packages(),
     include_package_data=True,