20.6.0 update

Author: shilpa-khanal

setup.py

@@ -9,7 +9,7 @@
 
 setup(
     name='Avalara',
-    version='20.5.0',
+    version='20.6.0',
     url='https://github.com/avadev/AvaTax-REST-V2-Python-SDK',
     package_dir={'': 'src'},
     packages=['avalara'],