* Use tree index for DB

* Set uncles_hash, tx_root, receipts_root from verified block

* Use Filth instead of a bool

* Fix empty root check

* Flush block queue properly

* Expunge deref

* moving ipc deriving to trait

* refactoring of the client

* Asynchronous transactions (polling based for now).

- Alter eth_sendTransaction to be async, returning one of:
  - Transaction hash (signed and submitted).
  - Transaction promise ID (< 32 bytes).
  - Zero hash (will never be signed).
- Introduce new JSONRPC eth_checkTransaction.

The new API call takes a single argument - a promise ID. It returns
either:
- Transaction hash (signed and submitted).
- null (still pending, call again later),
- Zero hash (will never be signed).

* New RPC eth_postTransaction

- Restore previous semantics of sendTransaction.
- Introduce eth_postTransaction.
- Some refactoring.

* Fix minor lockup.

* Use TransientHashMap to prevent leak.

Sync stand-alone binary and feature-gated dependencies refactoring 

Re-enabling Parity UI

* BC locking; Recovery batch

* Missing state root recovery

* Test

* Multi-mode logging.

Better for miners (they get immediate notification of new block).
Better for general use (less superfluous information shown).

* Remove comment.

[ci:skip]

* Minor string change

[ci:skip]

* Minor message tweak.

* Minor tweaks and indentation fix.

* Util funtions to get OS-standard config path.

* Build fix.

* Optimize ethash verification

* disable WAL for puts

* Clear account cache after commit

* Commit only modified accounts

* Optimize existing block check

* Cache last hashes

* Delete values immediately from DB overlay

* Match remove behaviour; test

* Warning fixed

* Minor additions to allow resetting of code.

* Add test.

* Provisional DAO hard-fork proposal.

* Change to reflect latest HF spec.

* Include extradata restrictions and overrides.

* Introduce new tests.

* Update tests to new spec format.

* Allow JSON chain spec fields to be optional.

* Remove superfluous definitions. Fix overflow risk.

* Fix build.

* Add missing file.

* Remove old flag.

* Update to latest address set.

* Update tests and test spec to latest.

Change the mining default to release only on own transactions.

* fix network_start regression

* network io handler

* move registration to the network start

* die on DB from the future

* use error type to print messages, print db path

* Cleanup of colour code. Use is_a_tty.

* Fix test build.

* Another fix.

asynchronous rob authored Jul 14, 2016 and Arkadiy Paronyan committed Jul 14, 2016

* small cleanups in trie

* Memory trie skeleton

* decode nodes from RLP

* memorytrie -> memorytriedb

* implement Trie for MemoryTrie

* partially implement insert

* implement trie insertion

* don't load whole trie into memory, lookup across memory and db

* re-implement insertion and lazily load necessary nodes from DB

* node removal w/o fixing

* reduce churn in node storage

* finish remove implementation

* committing the in-memory trie

* reload root node after commit

* generate elastic arrays when converting nodes to rlp

* port triedbmut tests over to memorytriedb, fix a few bugs.

* hash count and dirty flag

* initial attempt for node inspection

* back to skeleton

* inspection framework

* implement insertion

* no panic paths in insert

* implement deletion without fixing

* node fixing

* commit nodes to db

* tracing targets and bugfix

* get tests to pass with a lot of tracing

* set playpen iterations to 10

* remove some tracing statements

* make TrieMut::root take &mut self

* replace triedbmut with memorytriedb

* treat empty insert value as removal

* add test for null insert

* fix some style concerns

* trie: use nodehandle for root_node, minor cleanup