* remove `BLS_WITHDRAWAL_PREFIX` (it is not used in phase 1, not phase 0)
* avoid inline comment (# Validate state root)
* simplify header inequality check in `process_proposer_slashing` (using uniqueness of BLS signatures)
* add `block = signed_block.message` helper variable for readability
* (typo) clarify that the state transition function consumes a signed block (as opposed to a block)
* generally make comments more consistent
* consistent formatting of container instantiation for `DepositMessage`
* avoid using three lines for `rewards[index] += Gwei(max_attester_reward // attestation.inclusion_delay)`
* introduce `effective_balance` helper variable for readability, and to avoid multi-line statement
* consistent ordering of `MIN_EPOCHS_TO_INACTIVITY_PENALTY` in the time parameters table
* (typo) "Dequeued validators for activation up to churn limit" => Dequeue validators
* "Save current block as the new latest block" => "Cache current block" (for consistent with `process_slot`)
* (typo) "Verify the validator has not yet exited" => "Verify exit has not been initiated"
* Use Pythonic `default=` for `max()` call in `initiate_validator_exit`
1. Reorder the fields to fit the container name
2. Rename `AggregateAndProof.index: ValidatorIndex` to `AggregateAndProof.aggregator_index: ValidatorIndex`
- Since we also have similar naming style like
`ProposerSlashing.proposer_index` or `VoluntaryExit.validator_index`
* p2p-interface: clarify that signing_root is used for block requests
* hash cleanups
* one more hash tree root gone for blocks - block hashes are always
signing roots!
* use simple serialize data types consistently
* Describe which finalized root/epoch to use
* remove custody_bits from attestation
* remove AttestationDataAndCustodyBit
* Specify inclusive range for genesis deposits
* add initial fork choice bounce prevention and tests
* PR feedback
* further test bounce attack
* wipe queued justified after epoch transition
* remove extra var
* minor fmt
* only allow attestatiosn to be considered from current and previous epoch
* use best_justified_checkpoint instead of queued_justified_checkpoints
* use helper for slots since epoch start
* be explicit about use of genesis epoch for previous epoch in fork choice on_block
* pr feedback
* add note aboutgenesis attestations
* cleanup get_eth1_vote
* make eth1_follow_distance clearer
* Update the expected proposer period
Since `SECONDS_PER_SLOT` is now `12`
* minor fix to comment in mainnet config
* Update 0_beacon-chain.md