* 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

* EIP-86

* Disable EIP-86 auto activation for now

* General state tests

* Allow dir name for a test

* block_hash method for LightChainClient

* abstraction and futures-based eth_filter

* log fetching for light client

* add eth-filter delegate

* eth_block fetching RPCs

* return default accounts from on_demand

* fix early exit

* BlockNumber -> BlockId

* early exit for no known block number.

* more resilience

* refactor commit

* fix proposal broadcast

* list encoding

* address grumbles

* to into

* initial native contract generator

* get generated code compiling

* unit tests for type codegen

* autogenerate registry contract

* native_contracts entry for registry

* service_transaction_checker

* fixed indentation

* add eip155 validation

* add transition block