title: Go to grandparent state with ui-router
body: <p>With <code>ui-router</code> I can use <code>$state.go('^')</code> to go to parent state without having to specify it's full path. Is there similar way to go to grandparent state (my parent state is abstract)?</p>
  
  <p>In <a href="http://angular-ui.github.io/ui-router/site/#/api/ui.router.state.$state" rel="noreferrer">documentation examples</a> I can see only <code>^</code> for parent, but maybe someone has good solution for this?</p>