Update link to current bls standard draft.

Update slot to hour numbers

* 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

Rename BytesN to ByteVector, rename Bytes to ByteList

backport v0.9.1 and v0.9.2 to dev

backport V09x

Fix dead link to use Internet Archive

backport v093 to dev

* 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`

Vyper b13 -> b13.hotfix1761 [replacement]

Co-Authored-By: Danny Ryan <dannyjryan@gmail.com>

Backport v0.9.4 to dev

It's possible that block request responses end up not containing any
blocks, so we need a way to encode this.

PySpec SSZ Bytes instantiated from hex string

`get_filtered_block_tree` typo

Allow empty lists in streamed responses

… configuration of this variable

Allow configuration of genesis fork version

… receiving block from expected proposer

`get_eth1_data` uses timestamp instead of block height

make genesis delay configurable

add eager attestation broadcasting

deposit with other fork version

move GENESIS_SLOT/EPOCH to constants

Rename vyper file from `.v.py` to `.vy`

Yet another attempt at adopting IETF BLS Standards

Minor cosmetic cleanups

[WIP] fix default value when voting on eth1data

validate block slot not from future in gossip

…uild and link changes to support move

reorg specs by fork and move ssz out to own folder