* 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
* Updated loading config from /Users/konstantinzolotarev/.vulcanizedb for addreses
* Updated contract addresses loading from env variables.
* Implement getter chain for addresses, configs and transformers
Solves the issue with declaring stuff as vars when the environment file hasn't been loaded yet. Instead, this data is fetched dynamically when the root commands are called.
* Update test data to use constant Kovan addresses
* Decouple integration tests from config file IO
* Add ABI to environment file, convert getter chains for related values
* Decouple tests suites from ABI config file IO
* Add startingBlock to environment and implement getter chain
* Exit when called without config file
* Add missing deployment blocks to staging.toml
* Remove comment
* 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
