add IoT Class

Author: Misiu

custom_components/argon40/manifest.json

@@ -4,13 +4,13 @@
   "version": "0.0.2",
   "documentation": "https://github.com/Misiu/argon40",
   "issue_tracker": "https://github.com/Misiu/argon40/issues",
-  "dependencies": [],
   "config_flow": false,
   "codeowners": [
     "@Misiu"
   ],
   "requirements": [
     "RPi.GPIO==0.7.0",
     "smbus-cffi==0.5.1"
-  ]
+  ],
+  "iot_class": "assumed_state"
 }