Reuse precalculated updated prior in `ldamodel.update_dir_prior` (#2274)
Reuse precalculated updated prior in `ldamodel.update_dir_prior` (#2274)


RaRe-Technologies/gensim,RaRe-Technologies/gensim,piskvorky/gensim,piskvorky/gensim,RaRe-Technologies/gensim,gojomo/gensim,RaRe-Technologies/gensim,piskvorky/gensim,gojomo/gensim,gojomo/gensim,gojomo/gensim