Keep empty lines.

Author: yujunetee

lib/wechat_assets_picker.dart

@@ -12,6 +12,7 @@ export 'src/constants/config.dart';
 export 'src/constants/constants.dart' hide packageName;
 export 'src/constants/enums.dart';
 export 'src/constants/typedefs.dart';
+
 export 'src/delegates/asset_picker_builder_delegate.dart';
 export 'src/delegates/asset_picker_delegate.dart';
 export 'src/delegates/asset_picker_text_delegate.dart';