message: Do not shortcut promise in set_state
diff: @@ -11,7 +11,7 @@ import app, { App } from './app';
  private global_event;
  protected set_state(state) {
  - if (state instanceof Promise) return; // ?
  + // if (state instanceof Promise) return; // ?
  this.state = state;
  if (!this.view) return;
  const html = this.view(this.state);
  