Fixes for AVS and DEVPORT-764

Author: avasachinbaijal

src/avalara/client.py

@@ -63,7 +63,7 @@ def __init__(self, app_name=None, app_version=None, machine_name=None,
         self.app_name = app_name
         self.app_version = app_version
         self.machine_name = machine_name
-        self.client_id = '{}; {}; Python SDK; 18.5; {};'.format(app_name,
+        self.client_id = '{}; {}; Python SDK; API_VERSION; {};'.format(app_name,
                                                                 app_version,
                                                                 machine_name)
         self.client_header = {'X-Avalara-Client': self.client_id}