code: def recover_release_data(app_folder):
      
      with open(os.path.join(app_folder, '.release.yaml'), 'rb') as f:
          return yaml.safe_load(f)
docs: Given the path to an app folder where an app was just built, return a
      dictionary containing the data emitted from running the buildpack's release
      script.
  
      Relies on the builder.sh script storing the release data in ./.release.yaml
      inside the app folder.