old_contents: from .lda import LDA
  from .dmr import DMR
  from .cdmr import CDMR
  from .vocabulary import Vocabulary
  from .corpus import Corpus
  
new_contents: from .lda import LDA
  from .dmr import DMR
  from .vocabulary import Vocabulary
  from .corpus import Corpus
  
subject: Remove CDMR from __init__