Replay the process that how to create a transaction, address. The purpose of this project is in order to me that can find new ideas from it, then extending its function or extracting its function to build other project. Decode transaction having a number of situation, so my code might be not able to decade them all correctly. And calculating unsigned message part is not perfect, i did not add P2PKH and P2SH in it. But at present, it done well to ordinary transaction(watch test data that inside script)