add dependency on `result` in opam
add dependency on `result` in opam

rneswold/lwt,rgrinberg/lwt,rneswold/lwt,c-cube/lwt,rgrinberg/lwt,ocsigen/lwt,rgrinberg/lwt,ocsigen/lwt,c-cube/lwt,rneswold/lwt,c-cube/lwt,ocsigen/lwt,rgrinberg/lwt