Use ordered dict instead of dict.

Author: goloroden

eventsourcingdb/client.py

@@ -124,7 +124,7 @@ async def write_events(
 
         response_data = await response.body.read()
         response_data = bytes.decode(response_data, encoding='utf-8')
-        response_data = json.loads(response_data)
+        response_data = json.loads(response_data, object_pairs_hook=OrderedDict)
 
         if not isinstance(response_data, list):
             raise ServerError(

eventsourcingdb/event/event.py

@@ -10,7 +10,7 @@
 Self = TypeVar("Self", bound="Event")
 
 
-@dataclass
+@dataclass(frozen=True)
 class Event:
     data: dict
     source: str