* Improves `BestBlock` comment
* Improves `TraceDB` comment
* Improves `journaldb::Algorithm` comment.
Probably the whole enum should be renamed to `Strategy` or something alike.
* Comments some of the `Client`'s fields
* Deglobs client imports
* Fixes comments
* Extracts `import_lock` to `Importer` struct
* Extracts `verifier` to `Importer` struct
* Extracts `block_queue` to `Importer` struct
* Extracts `miner` to `Importer` struct
* Extracts `ancient_verifier` to `Importer` struct
* Extracts `rng` to `Importer` struct
* Extracts `import_old_block` to `Importer` struct
* Adds `Nonce` trait
* Adds `Balance` trait
* Adds `ChainInfo` trait
* Fixes imports for tests using `chain_info` method
* Adds `BlockInfo` trait
* Adds more `ChainInfo` imports
* Adds `BlockInfo` imports
* Adds `ReopenBlock` trait
* Adds `PrepareOpenBlock` trait
* Fixes import in tests
* Adds `CallContract` trait
* Fixes imports in tests using `call_contract` method
* Adds `TransactionInfo` trait
* Adds `RegistryInfo` trait
* Fixes imports in tests using `registry_address` method
* Adds `ScheduleInfo` trait
* Adds `ImportSealedBlock` trait
* Fixes imports in test using `import_sealed_block` method
* Adds `BroadcastProposalBlock` trait
* Migrates `Miner` to static dispatch
* Fixes tests
* Moves `calculate_enacted_retracted` to `Importer`
* Moves import-related methods to `Importer`
* Removes redundant `import_old_block` wrapper
* Extracts `import_block*` into separate trait
* Fixes tests
* Handles `Pending` in `LightFetch`
* Handles `Pending` in filters
* Handles `Pending` in `ParityClient`
* Handles `Pending` in `EthClient`
* Removes `BlockId::Pending`, partly refactors dependent code
* Adds `StateInfo` trait
* Exports `StateOrBlock` and `BlockChain` types from `client` module
* Refactors `balance` RPC using generic API
* Refactors `storage_at` RPC using generic API
* Makes `MinerService::pending_state`'s return type dynamic
* Adds `StateOrBlock` and `BlockChain` types
* Adds impl of `client::BlockChain` for `Client`
* Exports `StateInfo` trait from `client` module
* Missing `self` use
To be fixed up to "Adds impl of `client::BlockChain` for `Client`"
* Adds `number_to_id` and refactors dependent RPC methods
* Refactors `code_at` using generic API
* Adds `StateClient` trait
* Refactors RPC to use `StateClient` trait
* Reverts `client::BlockChain` trait stuff, refactors methods to accept `StateOrBlock`
* Refactors TestClient
* Adds helper function `block_number_to_id`
* Uses `block_number_to_id` instead of local function
* Handles `Pending` in `list_accounts` and `list_storage_keys`
* Attempt to use associated types for state instead of trait objects
* Simplifies `state_at_beginning`
* Extracts `call` and `call_many` into separate trait
* Refactors `build_last_hashes` to accept reference
* Exports `Call` type from the module
* Refactors `call` and `call_many` to accept state and header
* Exports `state_at` in `StateClient`
* Exports `pending_block_header` from `MinerService`
* Refactors RPC `call` method using new API
* Adds missing parentheses
* Refactors `parity::call` to use new call API
* Update .gitlab-ci.yml
fix gitlab lint
* Fixes error handling
* Refactors `traces::call` and `call_many` to use new call API
* Refactors `call_contract`
* Refactors `block_header`
* Refactors internal RPC method `block`
* Moves `estimate_gas` to `Call` trait, refactors parameters
* Refactors `estimate_gas` in RPC
* Refactors `uncle`
* Refactors RPC `transaction`
* Covers missing branches
* Makes it all compile, fixes compiler grumbles
* Adds casts in `blockchain` module
* Fixes `PendingBlock` tests, work on `MinerService`
* Adds test stubs for StateClient and EngineInfo
* Makes `state_db` public
* Adds missing impls for `TestBlockChainClient`
* Adds trait documentation
* Adds missing docs to the `state_db` module
* Fixes trivial compilation errors
* Moves `code_hash` method to a `BlockInfo` trait
* Refactors `Verifier` to be generic over client
* Refactors `TransactionFilter` to be generic over client
* Refactors `Miner` and `Client` to reflect changes in verifier and txfilter API
* Moves `ServiceTransactionChecker` back to `ethcore`
* Fixes trait bounds in `Miner` API
* Fixes `Client`
* Fixes lifetime bound in `FullFamilyParams`
* Adds comments to `FullFamilyParams`
* Fixes imports in `ethcore`
* Fixes BlockNumber handling in `code_at` and `replay_block_transactions`
* fix compile issues
* First step to redundant trait merge
* Fixes compilation error in RPC tests
* Adds mock `State` as a stub for `TestClient`
* Handles `StateOrBlock::State` in `TestBlockChainClient::balance`
* Fixes `transaction_count` RPC
* Fixes `transaction_count`
* Moves `service_transaction.json` to the `contracts` subfolder
* Fixes compilation errors in tests
* Refactors client to use `AccountData`
* Refactors client to use `BlockChain`
* Refactors miner to use aggregate traits
* Adds `SealedBlockImporter` trait
* Refactors miner to use `SealedBlockImporter` trait
* Removes unused imports
* Simplifies `RegistryInfo::registry_address`
* Fixes indentation
* Removes commented out trait bound
* Move miner away from ethcore.
* Fix ethcore to use miner/transaction.
* Fix tests and warnings.
* fixed incorrect merge of the test in the documentation
* separate migration from util and make its dependencies into libs:
* snappy
* kvdb
* error
* common
* renamed common -> macros
* util error does not depend on snappy module
* ethsync does not depend on util nor ethcore_error
* nibbleslice and nibblevec merged with patricia_trie crate
* removed unused dependencies from util
* util journaldb traits does not need to be public
* util_error
* fixed ethcore compile error
* ignore .swo files
* Update chain.rs
* move common forks and parameters to common params
* port specs over to new format
* fix RPC tests
* parity-machine skeleton
* remove block type
* extract out ethereum-specific methods into EthereumMachine
* beginning to integrate Machine into engines. dealing with stale transitions in Ethash
* initial porting to machine
* move block reward back into engine
* abstract block reward logic
* move last hash and DAO HF logic into machine
* begin making engine function parameters generic
* abstract epoch verifier and ethash block reward logic
* instantiate special ethereummachine for ethash in spec
* optional full verification in verify_block_family
* re-instate tx_filter in a way that works for all engines
* fix warnings
* fix most tests, further generalize engine trait
* uncomment nullengine, get ethcore tests compiling
* fix warnings
* update a bunch of specs
* re-enable engine signer, validator set, and transition handler
* migrate basic_authority engine
* move last hashes into executedblock
* port tendermint
* make all ethcore tests pass
* json-tests compilation
* fix RPC tests: change in gas limit for new block changed PoW hash
* fix minor grumbles
* validate chainspecs
* fix broken import
* fix transaction verification for pre-homestead
* Rebase and fix compilation errors (tests not yet fixed)
* Use `debug_assert` over `assert`
* Fix tests
* Assert safety, clean up
* Fix up stale cache removal, move one assert to debug_assert
* Remove printlns
* Add licenses
* Fix benches
* Inline some no-ops in a hot loop that weren't being inlined
* Add spooky comment to make sure no-one removes the inlining annotations
* Minor cleanup
* Add option to switch between mmap and ram
* Flag ethash to use less memory when running light client
* Fix tests
* Remove todo comment (it's done)
* Replace assertion with error return
* Fix indentation
* Use union instead of `transmute`
* Fix benches
* Extract to constants
* Clean up and fix soundness holes
* Fix formatting
* Ignore missing-file errors
* Make incorrect cache size an error condition instead of a panic, remove dead code
* Fix compilation errors from rebase
* Fix compilation errors in tests
* Fix compilation errors in tests
* apply contract constructors at spec load time
* debugging
* do trie updates in two stages
* add lint exception to newly-dead constructor
* squash warning in RPC tests
* kill dead accountdb constructors
* restore accountdb constructors under test configuration
* use provided state root in spec, if it exists
* state backend trait mirroring state_db API
* minimal state backend trait
make state module public
* fix json tests
* return errors on database corruption
* fix tests, json tests
* fix remainder of build
* add Backend bound on state
* Create new column family for local node info
* remove DBTransaction::new reliance on DB
* KeyValueDB trait
* InMemory KeyValueDB implementation
* journaldb generic over KVDB
* make most of `ethcore` generic over KVDB
* fix json tests compilation
* get all tests compiling
* implement local store (just for transactions)
* finish local store API, test
* put everything into place
* better test for skipping bad transactions
* fix warning
* update local store every 15 minutes
* remove superfluous `{}`s
* The front-end for each hard-fork, also EIP-160.
* Address EIP161 a/c
* Include EIP-161b
* EIP-161 part d.
* Fix test build.
* Fix one test, add another.
* Fix use of bloom & renaming.
* Initial groundwork for EIP-155
* Fix minor bug.
* Fix all tests finally.
* Rest of EIP-155.
* Add tests for EIP-155 algorithm.
Update transaction tests validation.
* Minor reformat.
* Address grumbles.
* Remove unused code.
* Fix SUICIDE gas mechanism and add consensus tests.
* Remove commented code.
* Set Frontier hardfork block number
* Fix warning.
* Transaction tests,
