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

Defaults to the amount of cores available on the CPU

Replaces functionality `-seed=true` with `-seed="ip:port"`

Cleanup object naming for clarity

Use “wsport” flag to change default port

* Includes new rlp decoder

- new flag nat for nat support UPNP|PMP
- new flag pmp for PMP gateway IP
- add NatType to utils/cmd to get p2p.NAT from nat type string
- obsolete usepnp flag
- get rid of IsUpToDate and sleep in miner start
- ethereum constructor takes nat type, port, maxpeer
- add pubkey arg to client identity

- eth p2p pkgs
- new Ethereum initialiser
- no caps param
- use nat type
- add NatType func to map nat type string to p2p.NAT
- add pubkey to client identity

* Miner has been rewritten
* Added new miner pane
* Added option for local txs
* Added option to read from MergeMining contract and list them for
  merged mining