This is a huge change, which includes some changes to replace code that
originally cloned to reuse allocations instead. The updated
`elastic-array` crate renames its consuming `Vec`-conversion method to
`into_vec`, which means that I can do a simple
`sed -i 's/to_vec/into_vec/'` and then fix the compilation errors.

This commit is probably a minor performance win and definitely a
significant readability win.

asynchronous rob authored Jun 28, 2017 and Arkadiy Paronyan committed Jun 28, 2017

* final engine changes

* migration to v13

* adding and removing pending transitions

* epoch_transition_for

* port snapshot to new engine methods

* final validator set interface

* fix compiler errors

* revert v13/epoch_depth transition

* make call on new epoch

* rolling finality checker

* tests for finality checker

* constructing finality proof upon pending transition

* fix warnings and finality proof checking

* fix compiler warnings in tests

* test fixes

* don't include genesis in finality checking

* change snapshot test chain building logic

* minor refactorings

* fetch epoch transition based on parent, fix divide-by-zero in SimpleList

* fix formatting

* fix ABIs and finality checking in snapshot restoration

* encode signal number in proof

* create more blocks at the end of tests

* update gist to accurate contract code

* test for epoch_transition_for

* fix tests with immediateTransitions parameter

* disable force flag after forcing

* rename ValidatorsChanged to InitiateChange and finalizeSignal to finalizeChange

* a few more validator set tests

* Dust protection

* Track touched accounts in the substate

* Minor alterations

* Ethereum Classic Monetary Policy

Create a new parameter `ecip1017EraRounds`. When the block number
passes one era rounds, the reward is reduced by 20%.

See https://github.com/ethereumproject/ECIPs/blob/master/ECIPs/ECIP-1017.md

* Update rewards for uncle miners for ECIP1017

In the monetary policy, the rewards are changed from "up to 7/8 of the
reward" to "1/32 of the reward".

* Fix an off-by-one error in ECIP1017 era calculation

According to
https://github.com/ethereumproject/ECIPs/blob/master/ECIPs/ECIP-1017.md,
when in block number 5,000,000, it should still be in Era 1 (which in
our code `era == 0`). So we need to check whether the `rem` equals to
zero and act accordingly when calculating the era.

* `ecip1017_era_rounds` missing from EthashParams when run in build bot

* strip out ecip1017_eras_block_reward function and add unit test

This reverts commit 6b874ced.

* Fix stack display.

* Additional compatiblity fixes.

* Duration limit made optional for EthashParams

* Forgotten space added

* EIP-211

* Optimized memory usage

* Optimized truncation

* add a simple test for is_push so that every small utility has a corresponding unit test

* split evm/factory.rs into two files as the TODO suggests

* style fixes according to review comments

* EIP-210

* comment

Tomasz Drwięga authored May 26, 2017 and Arkadiy Paronyan committed May 26, 2017

* Revamping evmbin to support spec files, json format and subcalls.

* Fix formatting of usage.

Nikolay Volf authored May 24, 2017 and Arkadiy Paronyan committed May 24, 2017

* update to latest bigint

* bump elastic array and deps

* fix rlp tests

* also update all smallvec deps

* fix doc test

* reduce parking in attempt to fix CI bug

* fix from/into electum bug

* remove duplicate imports

Tomasz Drwięga authored May 23, 2017 and Arkadiy Paronyan committed May 23, 2017

* Signer subscription.

* Fixing RPC tests.

* Block Headers eth-pubsub.

* PubSub for light client.

* Fixing tests.

* Updating to proper jsonrpc version.

* Update to correct tests.

* Fixing tests.

Tomasz Drwięga authored May 23, 2017 and Arkadiy Paronyan committed May 23, 2017

* Adding CLI option for port shift and unsafe expose.

* Fixing IPC path.

* Fix hosts when attempting to expose on all interfaces.

* Fixing test.

* Fix typo.

keorn authored May 22, 2017 and Marek Kotewicz committed May 22, 2017

* report missing block

* add a test validator set

* add a skip test

* clean up test

* report all skipped

* implement From<&'static str> for Secret

* Dev account.

* Fix Secret semantics.

* separate modules for consensus snapshot chunks

* bulk of authority warp logic

* finish authority warp implementation

* squash warnings and enable authority snapshot mode

* test harness for PoA

* fiddle with harness

* epoch generation proof fixes

* update constructor code

* store epoch transition proof after block commit

* basic snap and restore test

* use keyvaluedb in state restoration

* decompress chunks

* fix encoding issues

* fixed-to-contract-to-contract test

* implement ancient block import

* restore genesis transition in PoW snapshot

* add format version method to snapshot components

* supported version numbers in snapshot_components

* allow returning of ancient epoch transitions

* genesis hash mismatch check

* remove commented code

multirust is deprecated.