* Gas price statistics.
Affects eth_gasPrice.
Added ethcore_gasPriceStatistics.
Closes#1265
* Fix a bug in eth_gasPrice
* Fix tests.
* Revert minor alteration.
* Tests for gas_price_statistics.
- Tests;
- Additional infrastructure for generating test blocks with
transactions.
* Firt commit.
* First non-functional but correct implementation of BasicAuthority.
Still needs:
- Sealing infrastructure.
* Punch a hole to give miner access to key store.
* Fix test built.
* Basic version of synchronous mining.
This will seal a block whenever a new transaction comes through.
To be made better we need a timer which will wait for one second after the
last block before sealing a new one - better still would be to cooperatively
interleave blocks with other sealing nodes.
* Add tests.
* Fix minor issues from repotting.
* Address grumbles.
