message: handle update in StructureFromModel
diff: @@ -31,6 +31,7 @@ import { ModelStructureRepresentation } from '../representation/model';
  import { parseDcd } from '../../../mol-io/reader/dcd/parser';
  import { coordinatesFromDcd } from '../../../mol-model-formats/structure/dcd';
  import { topologyFromPsf } from '../../../mol-model-formats/structure/psf';
  +import { deepEqual } from '../../../mol-util';
  export { CoordinatesFromDcd };
  export { TopologyFromPsf };
  @@ -280,6 +281,11 @@ const StructureFromModel = PluginStateTransform.BuiltIn({
  return Task.create('Build Structure', async ctx => {
  return ModelStructureRepresentation.create(plugin, ctx, a.data, params && params.type);
  })
  + },
  + update: ({ a, b, oldParams, newParams }) => {
  + if (!b.data.models.includes(a.data)) return StateTransformer.UpdateResult.Recreate;
  + if (!deepEqual(oldParams, newParams)) return StateTransformer.UpdateResult.Recreate;
  + return StateTransformer.UpdateResult.Unchanged;
  }
  });
  