message: add opentype.options parameter
diff: public models: IModelMap = {};
  - constructor(font: opentype.Font, text: string, fontSize: number, combine = false, centerCharacterOrigin = false, bezierAccuracy?: number) {
  + constructor(font: opentype.Font, text: string, fontSize: number, combine = false, centerCharacterOrigin = false, bezierAccuracy?: number, opentypeOptions?: opentype.RenderOptions) {
  var charIndex = 0;
  var combineOptions: ICombineOptions = {};
  charIndex++;
  };
  - font.forEachGlyph(text, 0, 0, fontSize, null, cb);
  + font.forEachGlyph(text, 0, 0, fontSize, opentypeOptions, cb);
  }
  