* 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
* owning views of blockchain data
* port blockchain and client traits to owning views
* fix ethcore tests
* use strong headers and bodies in ethcore_light
* port ethsync to use owning views
* port rpc to owning views
* port parity informant and blockchain export
* clarify "cancelled periodic snapshot" message
* more rigorous checks for snapshot validity
* verify ancient blocks on import
* limit number of fed blocks
* make it possible to feed snapshot service canonical hashes
* fix failing test build
* swap ethash DAG only when more recent
* allow taking snapshot from just-restored database without error
* make creation informant less spammy
* Ancestry iterator failure-resilient
* make uncle hash searching resilient to incomplete chain
* deduce pre-chunk info from last written block's details
* split journaldb commit into two functions: journal_under and mark_canonical
* use new commit mechanism in client
* Configurable history size in master
* Reduce DB history
* Configurable history size
* Set min history size
* Test
* Fixed a test and reduced the limit
* bloom crate link
* database layout and outdated tests
* state db alterations
* v10 migration run
* using arc
* bloom migration
* migration fixes and mess
* fix tests
* State cache
* Reduced copying data between caches
Whitespace and optional symbols
* Reduced copying data between caches
Whitespace and optional symbols
* Set a limit on storage cache
* Style and docs
Closes#2213
Omit transaction and receipt roots from abridged block.
No longer use RLP compression.
Make ordered_trie_root generic over an iterator to save an allocation.
Breaks snapshot format backwards compatibility (with other 1.4 snapshots -- it's already been broken with 1.3).
Documentation will need updating
