message: Issue Moving QUANTILE
  Don't stomp on previous reorderings
  for continuous windowed LISTs
diff: @@ -457,7 +457,7 @@ struct DiscreteQuantileListOperation : public QuantileOperation<SAVE_TYPE> {
  state->upper.resize(state->lower.size(), offset);
  } else {
  state->disturbed.push_back(q);
  - state->lower.push_back(std::min(lb, offset));
  + state->lower.push_back(MinValue(lb, offset));
  }
  lb = offset + 1;
  }
  @@ -776,11 +776,11 @@ struct ContinuousQuantileListOperation : public QuantileOperation<SAVE_TYPE> {
  if (fixed && CanReplace(state, data, j, FRN, CRN)) {
  rdata[q] = Interpolate<INPUT_TYPE, RESULT_TYPE, false>(data, index, quantile, state->pos);
  state->upper.resize(state->lower.size(), FRN);
  - lb = CRN + 1;
  } else {
  state->disturbed.push_back(q);
  - state->lower.push_back(lb);
  + state->lower.push_back(MinValue(lb, FRN));
  }
  + lb = CRN + 1;
  }
  state->upper.resize(state->lower.size(), valid);
  