fix: Ignore heartbeat messages during EventQL query (#109)

Author: matthiasharzer

eventsourcingdb/client.py

@@ -187,6 +187,9 @@ async def run_eventql_query(self, query: str) -> AsyncGenerator[Any]:
             async for raw_message in response.body:
                 message = parse_raw_message(raw_message)
 
+                if is_heartbeat(message):
+                    continue
+
                 if is_stream_error(message):
                     error_message = message.get('payload', {}).get('error', 'Unknown error')
                     raise ServerError(f"{error_message}.")
@@ -329,4 +332,4 @@ async def read_event_types(self) -> AsyncGenerator[EventType]:
                 raise ServerError(
                     f'Failed to read event types, an unexpected '
                     f'stream item was received \'{message}\'.'
-                )
+                )