####refactored version For now I made the refactored ver at kaggle: https://www.kaggle.com/leo8976/opinion-mining-a-neural-network-approach-s-90/

the following changes took place at the refactored version:

1.use of stanza tokenizer instad of keras. 2.better cleaning. 3.data leakage has been fixed. 4.two options for encoding (init embeddings with FastText or embeddings without init)