message: feat(link): Added rel noopener and norefferer
  For security reasons noopener and noreferrer should be used for links with target _blank.
diff: @@ -132,7 +132,8 @@ impl<'a, LabelFlag, ToFlag, RE: RawEl> Link<LabelFlag, ToFlag, RE> {
  }
  pub fn new_tab(mut self) -> Link<LabelFlag, ToFlag, RE> {
  - self.raw_el = self.raw_el.attr("target", "_blank");
  + self.raw_el = self.raw_el.attr("target", "_blank")
  + .attr("rel", "noopener noreferrer");
  self.into_type()
  }
  