message: fixed sequence label regression
  show comp id only when non-standard, i.e. code is X
diff: @@ -130,7 +130,15 @@ namespace Sequence {
  const labels: string[] = [];
  for (let i = 0, il = idx; i < il; ++i) {
  const mh = microHet.get(seqIds[i]);
  - labels[i] = mh ? `(${mh.join('|')})` : codes[i];
  + if (mh) {
  + const l = mh.map(id => {
  + const c = codeFromName(id);
  + return c === 'X' ? id : c;
  + });
  + labels[i] = `(${l.join('|')})`;
  + } else {
  + labels[i] = codes[i] === 'X' ? compIds[idx] : codes[i];
  + }
  }
  this.length = idx;
  