* WIP
* Replace Rlp with UntrustedRlp in views, explicity unwrap with expect
First pass to get it to compile. Need to figure out whether to do this or to propogate Errors upstream, which would require many more changes to dependent code. If we do this way we are assuming that the views are always used in a context where the rlp is trusted to be valid e.g. when reading from our own DB. So need to fid out whether views are used with data received from an untrusted (e.g. extrernal peer).
* Remove original Rlp impl, rename UntrustedRlp -> Rlp
* Create rlp views with view! macro to record debug info
Views are assumed to be over valid rlp, so if there is a decoding error we record where the view was created in the first place and report it in the expect
* Use $crate in view! macro to avoid import, fix tests
* Expect valid rlp in decode functions for now
* Replace spaces with tabs in new file
* Add doc tests for creating views with macro
* Update rlp docs to reflect removing of UntrustedRlp
* Replace UntrustedRlp usages in private-tx merge
* Private transaction message added
* Empty line removed
* Private transactions logic removed from client into the separate module
* Fixed compilation after merge with head
* Signed private transaction message added as well
* Comments after the review fixed
* Private tx execution
* Test update
* Renamed some methods
* Fixed some tests
* Reverted submodules
* Fixed build
* Private transaction message added
* Empty line removed
* Private transactions logic removed from client into the separate module
* Fixed compilation after merge with head
* Signed private transaction message added as well
* Comments after the review fixed
* Encrypted private transaction message and signed reply added
* Private tx execution
* Test update
* Main scenario completed
* Merged with the latest head
* Private transactions API
* Comments after review fixed
* Parameters for private transactions added to parity arguments
* New files added
* New API methods added
* Do not process packets from unconfirmed peers
* Merge with ptm_ss branch
* Encryption and permissioning with key server added
* Fixed compilation after merge
* Version of Parity protocol incremented in order to support private transactions
* Doc strings for constants added
* Proper format for doc string added
* fixed some encryptor.rs grumbles
* Private transactions functionality moved to the separate crate
* Refactoring in order to remove late initialisation
* Tests fixed after moving to the separate crate
* Fetch method removed
* Sync test helpers refactored
* Interaction with encryptor refactored
* Contract address retrieving via substate removed
* Sensible gas limit for private transactions implemented
* New private contract with nonces added
* Parsing of the response from key server fixed
* Build fixed after the merge, native contracts removed
* Crate renamed
* Tests moved to the separate directory
* Handling of errors reworked in order to use error chain
* Encodable macro added, new constructor replaced with default
* Native ethabi usage removed
* Couple conversions optimized
* Interactions with client reworked
* Errors omitting removed
* Fix after merge
* Fix after the merge
* private transactions improvements in progress
* private_transactions -> ethcore/private-tx
* making private transactions more idiomatic
* private-tx encryptor uses shared FetchClient and is more idiomatic
* removed redundant tests, moved integration tests to tests/ dir
* fixed failing service test
* reenable add_notify on private tx provider
* removed private_tx tests from sync module
* removed commented out code
* Use plain password instead of unlocking account manager
* remove dead code
* Link to the contract changed
* Transaction signature chain replay protection module created
* Redundant type conversion removed
* Contract address returned by private provider
* Test fixed
* Addressing grumbles in PrivateTransactions (#8249)
* Tiny fixes part 1.
* A bunch of additional comments and todos.
* Fix ethsync tests.
* resolved merge conflicts
* final private tx pr (#8318)
* added cli option that enables private transactions
* fixed failing test
* fixed failing test
* fixed failing test
* fixed failing test
* 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
* remove old lint silencer
* dispatch requests only to peers with higher TD
* dynamic target for sync rounds
* use round pivots instead of frames, fix test
* fix total difficulty calculation for test client
* fix broken reorg algorithm
* fork test, fix ancestor search
* Allow sync reorg up to pruning history size
* Peer difficulty tracking
* Abort downloading block if received with NewBlock
* Set pruning history to 1200
* Renamed history size field
* possible fix for #3686
* queue: simplify conclusion, don't block on joining
* queue: park verifiers with timeout to prevent race
* more robust verification loop
* queue: re-introduce wait for verifier joining
