Update setup.py

Author: vijay-arya

setup.py

@@ -1,6 +1,6 @@
 import setuptools
 
-version = '0.2.0'
+version = '0.2.1'
 
 with open("aix360/version.py", 'w') as f:
     f.write('# generated by setup.py\nversion = "{}"\n'.format(version))