Initial smart-miner stuff
More mining stuff
Merge conflicts
Mining rework
Merge master into miner branch
Reimplement new miner creation
Updated transaction constructor
Merge branch 'master' into develop
Added gas and gas price.

* library's `createTx` method changed so it accepts a gas price
* dev console accepts code as well as the library
Removed CreateTx
Updated to new mutan api
Fixed an issue with sending gas to a contract
Fixed miner
Added tx output
Fix merge conflict
Merge branch 'develop' into miner
Added mnemonic priv key
Fixed up grammar and spelling in README
Nonce handling
Merge branch 'develop' into feature/mnemonic