Revert "2.2.2 update"

This reverts commit bb387e9.

Author: shilpa-khanal

setup.py

@@ -9,7 +9,7 @@
 
 setup(
     name='Avalara',
-    version='20.10.2',
+    version='20.9.0',
     url='https://github.com/avadev/AvaTax-REST-V2-Python-SDK',
     package_dir={'': 'src'},
     packages=['avalara'],