old_contents: /**
   * Tico library.
   *
   * @export {Recommender} Recommender
   * @export {Distances}   Distances
   */
  module.exports = {
    Recommender: require('./lib/recommender'),
    Distances  : require('./lib/distances')
  };
new_contents: /**
   * Tico library.
   *
   * @export {Recommender} Recommender The recommendation engine class
   * @export {Distances}   Distances   The distance functions holder
   */
  module.exports = {
    Recommender: require('./lib/recommender'),
    Distances  : require('./lib/distances')
  };
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