Merge pull request #119 from avadev/21.9.0

SDK Release 21.9.0

Author: svc-developer

setup.py

@@ -9,7 +9,7 @@
 
 setup(
     name='Avalara',
-    version='21.8.0',
+    version='21.9.0',
     url='https://github.com/avadev/AvaTax-REST-V2-Python-SDK',
     package_dir={'': 'src'},
     packages=['avalara'],