- queued       bool // flag for blockpool to skip TD check
- set to true when future block queued
- in checkTD: skip check if queued
- TODO: add test (insertchain sets future block)

* miner control moved to `admin.miner`
* miner option to set extra data
* block extra now bytes

- add validation on TxMsg checking for nil
- add test for nil transaction
- add test for zero value transaction (no extra validation needed)

- rename Validate -> ValidateFields not to confure consensus block validation
- add nil transaction and nil uncle header validation
- remove bigint field checks: rlp already decodes *big.Int to big.NewInt(0)
- add test for nil header, nil transaction

- add validate method to types.Block
- validate after Decode -> error
- add tests for NewBlockMsg

There is no reason to keep them as ethutil.Bytes.

* chain manager sets td on block + td output w/ String
* added tx pool tests for removing/adding/validating
* tx pool now uses a set for txs instead of list.List

* Includes new rlp decoder

* Added additional chain tests
* Added proper mutex' on chain
* Removed ethereum dependencies

* Block(s)
* Transaction(s)