* bls spec tests
* add more bls tests
* use ioutil instead of bazel runfiles
* dont read bytes
* skip tests that overflow uint64
* manually fix input data
* add tests
* lint and gaz
* add all new changes
* some refactoring, cleanup, remove new API methods that only exist for tests
* gaz
* Remove yamls, skip test
* Verify signatures of attestations
* Implement BLS Signing for attestations
* Remove custody bit 0 from the attestation for now
* Fixes tests for attestations
* Fix tests to ensure they use proper attester indice
* Run gazelle
* Goimports
* Test attestation sigs in block operations
* Change formatting and make sure signatures are actually verified
* Fix duplicate import
* Fix duplicate import from merge
* Organize attestation sig to be conssitent with codebase
* Update to comments
* Change signatures to use aggregation
* Run gazelle
* Change function to return err instead of bool
Also gofmt
* Fix for comments
* Move createAggregationSignature to a function in attestations.go