* Use transformer factory for Bite
- introduces separate transformer factory for non-LogNote events
- converter includes `ToEntities` for events defined via ABI
* Updates after rebasing with staging
* Add DB migrations for flog
* Add Vow addresses and constants
* Add err logging to ABI signature getter, test for flog sig
* Add flog transformer
* Add tests+data for flog transformer
* Prepend DB tables and columns with vow_
* Panic on failure to get method sig
* Add log_index field to flip kick
* Add log index to flop kick
* Add repo tests for Cat.file
* Add log_index to vat_flux
* Add log_index to vat_slip
* Add log_index to vat_toll
* Add log_index to vat_tune
* Add test to repos for updating checked headers
* Deal integration test
* Add LogIndex to CatFileChopLump to update unique constraint
* Add LogIndex to cat_file_pit_vow records
* Add integration tests for Cat.file transformers
* Add log index to Cat.file flip
* Add getSignatures command for list of signatures in constants
* Update VatTune converter's formatting of addresses
and added an integration test
* Move VatTune and PriceFeeds integration tests to a common suite
* Update VatGrab converter for address format
* Update frob converter to fix urn and ilk formatting/decoding
* Update formatting
* Update make test command and add integrationtest command
* Add integration test to travis build
* Update creating headers in integration tests to include Raw and Timestamp fields