v0.1.0 - A person who never made a mistake never tried anything new

Provide library to build Ethereum web assembly(ewasm) contract with following features:

1. RDB (relational database) Demo video
2. KV (key-value storage) Demo video
3. ERC-20 (token standard) Demo video
4. ERC-721(non-fungible token standard) Demo video
5. ERC-1155 (multi-token standard)Demo video