* update transformer to able to recheck headers
* put cap on rechecking header
* integration test for recheck headers
* use enum for recheck headers param; make recheck cap configurable
* update integration tests with new test config
* update omni pkg with new recheck header column type
* update migration with new migration tool and final tweaks needed to accommodate changes in omni pkg
* Upgrade geth from 1.8.15 to 1.8.18
* Update vat_tune to use shared repository methods
* Query blockchain by block hash instead of block number range
* Remove hash validation from repositories
* Fix vow flog integration test
* Update README Travis build sticker
* Update constants formatting per go fmt
* Update EthPublicKeyParser.ParsePublicKey to use discv5.PubkeyID method
* Address PR comments
- Delete header on conflict to prompt data refresh (cascade deletes all
data associated with that block)
- Derive header hash from rpc payload rather than computing it from data
(prevents hash mismatch between blockchain and cache)
* Use shared repository test examples for frob
* Use shared repository methods for frob
* Use shared repository test examples for flop kick
* Use shared repository methods for flop kick
* Use shared repository test examples for flip kick
* Use shared repository methods for flip kick
* Use shared repository test examples for bite
* Use shared repository methods for bite
* Alphabetize check headers constants
* Log checked headers for Bite events
* Log checked headers for Drip drip events
* Log checked headers for Drip file events
- mark headers checked for 3 implementations of file on the Drip contract
* Log checked headers for Frob frob events
* Log checked headers for Pit file events
- mark headers checked for 3 implementations of file on the Pit contract
* Log checked headers for Vat init events
- Enables parsing additional values off the log if necessary
- Also update Frob to reflect DSS changes (lad => urn)
- Move Frob constants to shared directory
* Incorporate DSS updates
- Lad renamed to Guy
- Dink and Dart added to Frob
* update test chain data
* Remove Mom field from FlipKick
* Update Flip ABI and sample flip kick data
* Incorporate updates to Frob event
- Guy renamed to Lad
- Era and Gem removed, iArt added
- Also turn off integration tests that read from test chain while
events are actively under development
