bump up version for release

Author: Xiao Li

setup.py

@@ -10,7 +10,7 @@
 
 setup(
     name="diem",
-    version="0.6.2020120201", # bump up version for release, format 0.X.YYYYMMDDNN
+    version="0.6.2020120202", # bump up version for release, format 0.X.YYYYMMDDNN
     description="The Python Client SDK for Diem",
     long_description=long_description,
     long_description_content_type='text/markdown',