add features

clusters/cl01tl/helm/matrix-synapse/values.yaml

@@ -21,6 +21,10 @@ matrix-synapse:
       client_whitelist:
         - https://chat.alexlebens.dev/
       update_profile_information: true
+    experimental_features:
+      msc3202_device_masquerading: true
+      msc3202_transaction_extensions: true
+      msc2409_to_device_messages_enabled: true
   synapse:
     strategy:
       type: Recreate