The primary new functionality in this release is that Wrappers Delight will now generate base classes for your custom entities, if you have not written and declared them with hook_wrappers_delight_base_classes(). A generated base class will include getters and setters for all the properties of the entity type declared by hook_entity_property_info().
Base class generation is now the default behavior for entity types with an unknown base class. If you want to skip it, you can add --skip-base-class to your drush command.