0.4.0

It's the first release after Grandine was open-sourced. Huge thanks to @barnabasbusa, @diglos, @pk910, @yorickdowne and others who helped to shape this release by integrating Grandine in eth-docker, kurtosis, etc.

Changelist:

• Reduced log noise
• Remove subnet service messages from snapshot tests.
• Add extra error messages when payload_id was not obtained
• Create validator dir if missing when moving slashing protection interchange files. #22
• Add builder_boost_factor param to /eth/v3/validator/blocks{slot}
• Add info about tick delay in debug log
• Added hive submodule
• Fix block building in /eth/v3/validator/blocks/{slot}:
• Don't print /metrics body in logs
• Create validator if it is missing. #22
• Updated eth2_libp2p
• Don't publish blocks that are not valid in /eth/v2/beacon/blocks
• Fix incorrect choices length in attestation packing
• Refine payload preparation warn message
• Update eth2_libp2p
• Add --validator-api-token-file option for custom auth file. #8
• Separate anchor state & real genesis state:
• Split attestation packing into optimal and greedy
• Add missing metrics:
• Enable metrics in Validator API #8
• Precompute own beacon committee members for attesting, aggregating and computing beacon committee subscriptions
• Update Rust toolchain to 1.77.2, pass or suppress lints, use new features
• Move interchange backup files & slashing_protecion DB to validator_dir #22
• fix db name
• Set default graffiti
• Add commit version to application version. #23
• Remaining fixes and cleanup from feature/in-memory-db
• Print loading keys message only when validator client options are present #21
• Add POST /eth/v2/beacon/blocks endpoint with broadcast_validation field stubbed
• Compound sync committee rewards in SlotReport
• Make signer lockless: substitute RwLock with ArcSwap
• Rewrite CI workflow to match scripts/ci/ci.sh
• Update IGNORED_GLOBS in scripts/ci/consensus-spec-tests-coverage.rb to pass CI
• scripts/ci/ci.sh: Do not try to update eth2-cache submodule
• scripts/ci/ci.sh: Do not run Tarpaulin
• Add tick delay metrics
• Remove validation checks that prevent inclusion of self-incriminating slashings into proposed block
• Add eth2-cache to .gitignore
• Reduced blob sidecar log verbosity
• Moved Grandine book to this repo
• Use head state in validator API #8
• Serialize validator API error messages in response #8
• Remote key manager:
• Add /eth/v1/validator/{pubkey}/voluntary_exit endpoint
• Refine key load from Web3Signer messages
• Fix issue with Web3Signer keys not being reloaded after failed initial load
• Correctly propagate PoolAdditionOutcome to HTTP response
• Added build script for 'minimal' config
• Reload validator public keys from Web3Signer instances on each epoch if previously failed to load or CLI option is set
• typo fix
• Unify dockerfiles
• Added basic Github workflow build #20
• Added sort to greedy attestation packing
• Fixes for passing tests:
• Update validator API command line tests
• Move Keymanager API to Validator API (#8).
• Use genesis_fork_version from ChainConfig in /eth/v1/beacon/genesis
• Support keystore files with no extension (#21).
• Allow to specify --boot-nodes, --features and other CLI params separated by comma
• Run clippy check script with --features eth2-cache flag.
• Reduced and logging verbosity #19
• Added Dockerfile with build instructions (#17)
• Download genesis beacon states for testnets from network instead of loading from eth2-cache (#16).
• Genesis