spread(spread, min) {
    this.settings.spread = spread;

    if (min) {
      this.settings.minSpreadWidth = min;
    }

    if (this._layout) {
      this._layout.spread(spread, min);
    }

    if (this.manager && this.manager.isRendered()) {
      this.manager.updateLayout();
    }
  }
Adjust if the rendition uses spreads
@param  {string} spread none | auto (TODO: implement landscape, portrait, both)
@param  {int} [min] min width to use spreads at