message: accidentally removed from NextVersion
diff: @@ -1285,6 +1285,10 @@ The `fromRadians`, `fromDegrees`, and `fromAngles` methods of [Cartographic]($co
  The `ninezone-test-app` was used to test and demonstrate the now deprecated "ninezone" UI layout. The current `AppUi` layout is shown and exercised in `ui-test-app`.
  +## Improve/Enhance particle systems
  +
  +Improvements were made to the performance of [ParticleCollectionBuilder]($frontend) and an optional rotationMatrix was added to [ParticleProps]($frontend) so that particles can be rotated.
  +
  ## Changes to ECSql APIs
  Several changes to the APIs for executing ECSql statements have been made to improve performance and flexibility. This involved breaking changes to the `query`, `queryRowCount`, and `restartQuery` methods of [IModelConnection]($frontend), [IModelDb]($backend), and [ECDb]($backend).
  