Feature request: Add segwit true/false flag to transaction

[Haaroon]

Add present to check if a TX is a segwit I have to get the Hex from the bitcoin client, which takes some time. Could we please add a flag to blocksci which says if a transaction is segwit or not. Thanks

System Information (if applicable)

Using AMI: no
BlockSci version: 0.7 Blockchain: Bitcoin Parser: Disk Total memory: 128 GB