* Add block categorization (is_final=)
* Add godo task for vulcanizeDB (Example of how everything could work together)
* Add unique constraint on block_number and node
* Add index on block_id for transactions_table
* Add node_id index on blocks table
* Sort transactions returned from FindBlock by tx_hash
* lowercase tx_to, tx_from like etherscan
* Update Block w/ newest Block
* Add cascading delete to blocks and transactions tables
* Add handling for new conflicting blocks
* Command line version of sliding window n behind HEAD