Use yklz in seq2vec

Merge pull request #26 from Yoctol/release_0.4.0

release 0.4.0

Stable seq2vec

We provide following seq2vec models.
LSTM to LSTM architecture
CNN to LSTM architecture

v0.3.0: Merge pull request #14 from Yoctol/word2vec_LSTM

#14

v0.2.0

#10 update Seq2SeqAutoEncoderUseWordHash model optimizer and other
#11 change Seq2SeqAutoEncoderUseWordHash interfaces and attributes

v0.1.2

• Seq2SeqAutoEncoderUseWordHash
• HashSeq2Vec