* First little bits for chain-selection.
* Provide RPCs and get settings through to user defaults.
* Hasty stash.
* Fix updater accidentally redownloading.
* Finish up.
* Add JS tests.
* Hypervisor should never run a binary modified before itself.
* Style.
* Help tweak.
* Fix test compile.
* Fix JS test
* Build fix for tests.
* Revert default chain name
* Another test
* Use spec name via client.
* Fix mock up.
* whitespace
[ci:skip]
* whitespace
[ci:skip]
* remove exit/restart endpoints.
* make validator set aware of various states
* fix updater build
* clean up contract call
* failing sync test
* adjust tests
* nicer indent [ci skip]
* revert bound divisor
* CHT builder and prover
* use CHT abstraction in provider
* hide CHT internals from header chain
* fix itertools conflict by updating all to 0.5
* cht proof checker, use it in on_demand
* remove register_account_provider
* build rpc module
* new dummy client
* common EngineSigner struct
* from -> into
* initial report via call
* separate safe from regular contract
* transact_contract
* fix build
* return Signature, docs
* add sign method to some engines
* add safeContract spec
* update specs to new contracts
* use AuthorityRound for contract spec
* add more reporting
* add reporting test
* use gas floor
* shorter
* prune states based on memory param
* pruning memory CLI and usage in sync
* return purged value from memorydb
* calculate memory used incrementally in overlayrecentdb
* refactor shared history pruning code in client
* Fixed usage alignment
* journal_size function for fast memory calculation
* 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
* make on_connect/disconnect public
* free flow params constructor
* Shared ownership of LES handlers
* light provider impl for test client
* skeleton for testing light sync
* have test_client use actual genesis
* fix underflow in provider
* test harnesses for lightsync
* fix tests
* fix test failure caused by test_client changes
* 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
* 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