update version (#72)

Need to update version before creating tag (after this is in place, will
then release the newer version to the pypi library which will make these
new additions installable via pip)

setup.py

@@ -24,7 +24,7 @@ def get_install_requirements():
 
 setup(
     name='healdata_utils',
-    version='0.2.4',
+    version='0.3.0',
     author='Michael Kranz',
     author_email='[email protected]',
     long_description=generate_long_description(),