old_contents: from energy_normalization import normalize_with_sapm
  
  from ._version import get_versions
  __version__ = get_versions()['version']
  del get_versions
  
new_contents: from energy_normalization import normalize_with_sapm
  from degradation import rd_with_ols
  
  from ._version import get_versions
  __version__ = get_versions()['version']
  del get_versions
  
subject: Add degradation module to init.