get rid of numpy.str_
get rid of numpy.str_

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