allow GRU to operate in one-step mode (todo: we actually need to pass all hidden states in gen_sample()
allow GRU to operate in one-step mode (todo: we actually need to pass all hidden states in gen_sample()

Proyag/nematus,Proyag/nematus,cshanbo/nematus,shuoyangd/nematus,EdinburghNLP/nematus,EdinburghNLP/nematus,cshanbo/nematus,shuoyangd/nematus,rsennrich/nematus,rsennrich/nematus,cshanbo/nematus,Proyag/nematus,Proyag/nematus,EdinburghNLP/nematus,shuoyangd/nematus,shuoyangd/nematus,rsennrich/nematus,shuoyangd/nematus,EdinburghNLP/nematus,rsennrich/nematus,Proyag/nematus,EdinburghNLP/nematus,rsennrich/nematus,cshanbo/nematus,EdinburghNLP/nematus,rsennrich/nematus,shuoyangd/nematus,cshanbo/nematus,Proyag/nematus,cshanbo/nematus