Possibly significantly improve how portals are created and synced

example-config.yaml

@@ -66,6 +66,16 @@ bridge:
     # If false, it will only report when it stops retrying.
     report_connection_retry: true
 
+    # Number of chats to sync for new users.
+    initial_chat_sync_count: 10
+    # Number of old messages to fill when creating new portal rooms.
+    initial_history_fill_count: 20
+    # Maximum number of chats to sync when recovering from downtime.
+    # Set to -1 to sync all new chats during downtime.
+    recovery_chat_sync_limit: -1
+    # Whether or not to sync history when recovering from downtime.
+    recovery_history_backfill: true
+
     # The prefix for commands. Only required in non-management rooms.
     command_prefix: "!wa"