* progress on fixing #3947
* upsert after, but only if not already exists
* return an error in some case
* format
* handle case where there has not been any finality yet
* it works
* remove todo
* use variable with comments
* regression test
* revert off by one issue, fix tests
* rename receiver
* @nisdas pr feedback
* checkpoint progress
* feature flag and test
* return true if feature flag is not on
* add lint msg
* rollback tx if failure
* Revert validator/BUILD.bazel
* first pass, step 1 works
* naive from finalized to head
* delete commented code
* checkpoint progress on tests
* passing test
* abstract code slightly
* failure cases
* chkpt
* mostly working, missing a single block and having timeout
* passing tests
* comments
* comments
* gaz
* clarify comments
* progress on a few new cases
* add back bootnode query tool
* bootstrap from DHT
* chunked responses in round robin
* fix tests and deadlines
* add basic counter, time estimation
* hello -> handshakes
* show peers in use during sync
* just one last test failure
* only request blocks starting in the finalized epoch for step 1
* revert that
* comment out test and add better commentary
* move requestBlocks out to pointer receiver
* mathutil
* Update beacon-chain/sync/initial-sync/round_robin.go
Co-Authored-By: Raul Jordan <raul@prysmaticlabs.com>
* PR feedback
* PR feedback
