Provides a dataset of smart contract bytecodes and their ABIs.
The Contract addresses index needs to be manually downloaded from
https://etherscan.io/exportData?type=open-source-contract-codes.
Afterwards, the index needs to be clean up by removing the first-line Note:,
column titles and the "Txhash" column.
To fetch Smart Contract bytecodes, you can use the fetch.js script
./fetch.js