Use string query with `fq`

[errietta]

Hi, is it possible to consider the ability to use a raw string with fq, just like with q? I'm doing

   query.q(`{!tag=num}{!frange l=${num}}num`);

I'd like to be able to do that with fq Either that or a way to specify frange values :)

Thanks!

[errietta]

If you agree with that feature I could maybe get look at making a PR myself