* Move blockchain::rocksdb into a separate crate

* Add license and description for blockchain-rocksdb

* Add support for crosslink tests

* Add support for registry updates test

* Refresh support for deposit operation

* Add support for attestation test

* Add support for attester slashing test

* Add BlockHeader tests

* Add support for proposer slashing tests

* Add support for transfer tests

* Add support for blocks and slots sanity test

* Add scripts to run state tests

* Fix script

* Fix test path change

* Refactor duplicate into code

* Upgrade lmd-ghost to newer blockchain version

* Implement ShasperBackend

* Upgrade to blockchain 0.7

* Implement commit and chain query interface for rocksdb

* RocksDB backend creation logic

* Add rocksdb invocation from commandline

* Update README and upgrade blockchain client to newer version

* Remove unfinished pruning lmd-ghost strategy

* Move substrate-specific crates to subfolder substrate

* Fix cargo lock

* Fix CI

* Check in runtime wasm file

* Expose proposer index and pubkey to executor

* Use importer even for self-built blocks

* Remove unused imports

* New block builder routine

* Switch to real bls implementation and properly sign all data structures

* Fix compile warning

* Add conditional compile for serde(skip)

* fix: ancestorQuery should never return None

* fix: lmd-ghost error types unification

* Make lmd-ghost properly set head

* Implement JustifiableExecutor for beacon block struct

* Replace BestDepthImporter with ArchiveGhostImporter

* Create archive lmd-ghost impl for simplicity

* Add blockchain executable directly built on top of libp2p

* Fix tests

* [WIP] Update all config and struct definitions

* [WIP] Utils function spec update I

* [WIP] Utils functions spec update II

* [WIP] Re-init beacon

Cherry-pick back old code rather than modifying it is easier to do -- as there are many changes.

* [WIP] Cherry-pick back all types

* [WIP] Cherry pick back all helpers

* [WIP] Cherry-pick back validator status helpers

* [WIP] Migrate back per epoch helpers

* [WIP] Cherry-pick justification and finalization

* [WIP] Redo crosslink and rewards

* [WIP] Cherry-pick back all per epoch operations

* [WIP]

* [WIP] Port back all operations

* Add state root verification

* [WIP] Fix warnings

* Finish fixing all warnings

* Add function to execute block

* Add back small config

* Add new test repo

* Update yamltests for the new format and pass those tests

* Check block state root in execute_block

* Add full tests

* Update tests

* Add back block builder

* Fix other crate compile

* Make beacon crate work again in no_std

* beacon: UnsealedBeaconBlock

* Upgrade blockchain to 0.5.1

* Simple interface to blockchain

* Add block builder interface

* All basic ops for hashing using Digest interface

* Add support for digestible in ssz-derive

* Add Digestible interface for beacon crate

* Fix all missing docs in ssz

* Add docs for all beacon structs

* Update version

* ssz, ssz-derive: publish v0.1.1

* Remove keccak-hasher dependency

* [WIP] Reverse dependency for serenity crate

* Rename serenity to beacon

* Introduce with-codec and with-serde features for beacon

* Fix all compile due to interface changes

* Add description and license for beacon crate

* Update beacon version

* Commit cargo lock

* Implement use_fixed attr so that FixedVec can be hidden

* Fix yamltests and fix missing use_fixed in hash derive

* Make sure all tests are checked and fix an issue in slot progression

* Fix an overflow issue and flush stdout when running tests

* Add parameter to allow only running one test

* Fix epoch overflow and an issue related to effective balance

* Add test for permuted_index

* Fix a bug in beacon block index calculation

* Fix an issue in attestation inclusion

* Fix missing logic for handling deposit

* Shouldn't use wrapping

* Fix an issue in ssz and bitfield

* Add test for basic header serialization

* Fix serialization issue in beaconstate

* Make some tests to pass

* Comment out deposit_count for now

Test states it does not exist at this moment, while spec disagrees

* Ignore genesis block test because test/spec difference

* Add yamltests tool for running yaml state tests

* deny_unknown_fields for state

* Add deny_unknown_fields for all structs

* Do not use serde derive feature

* Remove derive feature from yamltests

* Move from zcash's crypto to signature-schemes

* Make secret making accept secrets of any length

* Make serenity crate use amcl crypto

* Add new uint tests

* Check deserialization for uint

* Align ssz to the newest dev spec

* Fix derive for new spec

* Check in prefixable

* Chunkify

* Add test for chunkify

* Add merkleize and tests

* Add bytes impl for hash

* Add tuple tests

* Fix derive hashing

* Add description for ssz and ssz-derive

* Remove debug println

* Fix build

* Add version for ssz

* Fix whitespace typo

* Fix breakage due to nightly 2019-03-18

* Remove rust toolchain file