Fix type error #3 // Add addon version

const.py

@@ -1,3 +1,5 @@
+VERSION = "v1.0.2.1"
+
 OAUTH_URL = "https://volvoid.eu.volvocars.com/as/token.oauth2"
 VEHICLES_URL = "https://api.volvocars.com/connected-vehicle/v1/vehicles"
 VEHICLE_DETAILS_URL = "https://api.volvocars.com/connected-vehicle/v1/vehicles/{0}"

main.py

@@ -1,7 +1,9 @@
 from volvo import authorize
 from mqtt import update_loop, connect
+from const import VERSION
 
 if __name__ == '__main__':
+    print("Starting volvo2mqtt version " + VERSION)
     authorize()
     connect()
     update_loop()

volvo.py

@@ -8,7 +8,7 @@ from const import charging_system_states, CLIMATE_START_URL, \
 
 session = requests.Session()
 session.headers = {
-                "vcc-api-key": settings["volvoData"]["vccapikey"],
+                "vcc-api-key": "",
                 "content-type": "application/json",
                 "accept": "*/*"
 }
@@ -42,6 +42,7 @@ def authorize():
         token_expires_at = datetime.now() + timedelta(seconds=(data["expires_in"] - 30))
         refresh_token = data["refresh_token"]
 
+        session.headers.update({"vcc-api-key": settings["volvoData"]["vccapikey"]})
         get_vehicles()
     else:
         message = auth.json()