message: print -0 in brili
diff: @@ -577,7 +577,7 @@ function evalInstr(instr: bril.Instruction, state: State): Action {
  case "print": {
  let args = instr.args || [];
  - let values = args.map(i => get(state.env, i).toString());
  + let values = args.map(function (i) { let val = get(state.env, i); if (Object.is(-0, val)) { return "-0"} else {return val.toString()}});
  console.log(...values);
  return NEXT;
  }
  