code: def do_OP_ROLL(vm):
      
      v = vm.pop_nonnegative()
      vm.append(vm.pop(-v-1))
docs: >>> s = [b'a', b'b', b'c', b'd', b'\2']
      >>> do_OP_ROLL(s, require_minimal=True)
      >>> print(s)
      [b'a', b'c', b'd', b'b']