message: Reset ConfalPyramidsIterator internal state correctly when switching
  chains
diff: @@ -87,6 +87,8 @@ export class ConfalPyramidsIterator {
  return this.moveStep();
  } else {
  this.residueIt.setSegment(this.chainIt.move());
  + if (this.residueIt.hasNext)
  + this.residueTwo = this.residueIt.move();
  return this.moveStep();
  }
  }
  