use hierarchical property layers to make config changes effective

immediately

owrx/jsons.py

@@ -0,0 +1,9 @@
+from owrx.property import PropertyManager
+import json
+
+
+class Encoder(json.JSONEncoder):
+    def default(self, o):
+        if isinstance(o, PropertyManager):
+            return o.__dict__()
+        return super().default(o)