* refactor BLS to expose an interface rather than a single implementation
* Split up tests, gofmt, goimports, docs
* godoc for signature.Copy()
* more godocs
* revert gomod / deps changes
* rm newline
* revert proto changes
* rename bls12 to herumi for clarity
* provide validator with real keystore public key
* fmt
* build errors buildkite
* readd imports removed by goimport
* gazelle
* address broken tests
* make reference to filename a param
* fmt
* imports
* gazelle
* os remove all
* Use better Temp storage for tests
* testmain approach to avoid repeating expensive operation for each test
* travis lint
* fix test
* nokeystore in status test
* passing
* fix goimports
