message: Resolved - Introduce updater for dependent model properties
diff: @@ -19,7 +19,7 @@ export {
  ValidatorRunner
  } from "../../validator";
  export { ItemValue } from "../../itemvalue";
  -export { Base, Event, ArrayChanges } from "../../base";
  +export { Base, Event, ArrayChanges, ComputedUpdater } from "../../base";
  export {
  ISurvey,
  ISurveyElement,
  