message: Add: `purser-core` index named exports
diff: @@ -20,4 +20,15 @@ const coreModule: Object = {
  GenericWallet,
  };
  +export {
  + helpers,
  + defaults,
  + validators,
  + normalizers,
  + messages,
  + types,
  + utils,
  + GenericWallet,
  +};
  +
  export default coreModule;
  