- improve logging
- suicide -> removeChain
- improved status BlocksInPool calculation

- remove blockpool code
- remove blockpool integration test (kinda embarrassing)
- remove errors.go

- blockpool moves to its own package
- uses errs pkg for its own coded errors
- publicly settable config of params (time intervals and batchsizes)
- test helpers in subpackage
- optional TD in blocks used now to update peers chain info
- major improvement in algorithm
- fix fragility and sync/parallelisation bugs
- implement status for reporting on sync status (peers/hashes/blocks etc)
- several tests added and further corner cases covered

RPC cleanup

Fix key store address hex decoding and accounts test

Thanks to https://github.com/jaekwon for original fix!

Convert gas values to integers

Implement OS sensitive dataDirs

Allow zero and negative block numbers

topics fix

Fixes #370

* Added an additional tx state which is used to get the current nonce
* Refresh transient state each time a new canonical block is found
* Properly uninstall filters. Fixes a possible crash in RPC

0 is genesis block. Xeth recognises -1 as current

Correct stack size validation for MUL, CALLDATACOPY, EXTCODESIZE, BLOCKH...

Persistent Node Key

* Implemented `eth_logs`
* Fixed issue with `filter.Find()` where logs were appended to an
  incorrect, non-returned slice resulting in no logs found

Don't print per-function testing results