* Use fastssz when available
* fix tests
* fix most tests
* Merge branch 'master' into faster-hash-proto
* Merge refs/heads/master into faster-hash-proto
* Merge refs/heads/master into faster-hash-proto
* Merge refs/heads/master into faster-hash-proto
* fix last test
* Merge branch 'faster-hash-proto' of github.com:prysmaticlabs/prysm into faster-hash-proto-2
* lint
* fix last test
* fix again
* Update beacon-chain/cache/checkpoint_state_test.go
Co-Authored-By: terence tsao <terence@prysmaticlabs.com>
* Merge refs/heads/master into faster-hash-proto
* rem slasher proto
* Merge branch 'master' of github.com:prysmaticlabs/prysm
* Merge branch 'master' of github.com:prysmaticlabs/prysm
* Merge branch 'master' of github.com:prysmaticlabs/prysm
* Merge branch 'master' of github.com:prysmaticlabs/prysm
* Merge branch 'master' of github.com:prysmaticlabs/prysm
* add a bit more better logging
* Empty db fix
* Improve logs
* Fix small issues in spanner, improvements
* Change costs back to 1 for now
* Merge branch 'master' of https://github.com/prysmaticlabs/Prysm into cleanup-slasher
* Change the cache back to 0
* Cleanup
* Merge branch 'master' into cleanup-slasher
* lint
* added in better spans
* log
* rem spanner in super intensive operation
* Merge branch 'master' into cleanup-slasher
* add todo
* Merge branch 'cleanup-slasher' of github.com:prysmaticlabs/prysm into cleanup-slasher
* Merge branch 'master' into cleanup-slasher
* Apply suggestions from code review
* no logrus
* Merge branch 'master' into cleanup-slasher
* Merge branch 'cleanup-slasher' of https://github.com/prysmaticlabs/Prysm into cleanup-slasher
* Remove spammy logs
* Merge branch 'master' of https://github.com/prysmaticlabs/Prysm into cleanup-slasher
* gaz
* Rename func
* Add back needed code
* Add todo
* Add span to cache func