message: Correct exterior markup when preparing for triangulation
diff: @@ -504,7 +504,7 @@ export class Triangulator {
  let list;
  for (let holeIndex = 1; holeIndex < loops.length; holeIndex++) {
  - list = Triangulator.createFaceLoop(loops[holeIndex], 0, Point2dArray.lengthWithoutWraparound(loops[holeIndex]), false, false);
  + list = Triangulator.createFaceLoop(loops[holeIndex], 0, Point2dArray.lengthWithoutWraparound(loops[holeIndex]), false, true);
  if (list && list === list.faceSuccessor) list.steiner = true;
  queue.push(Triangulator.getLeftmost(list));
  }
  