- TestPeerPromotionByTdOnBlock renamed and skipped for now test should pass iff
if TD is updated based on an agreement
- senders register in AddBlock, flag records if they are coming from newblock
message (and therefore advertise their TD with the block) or block message
(TODO: latter are stored on the cache and updated by checkTD call;
protocol should also call AddBlock on newblock messages by non-best peers)
- remove TD update from optional TD field in addBlock: this is no longer part of
the eth protocol spec -> TODO: reflect in wiki
- only initialise peer map if at least two
- update blockpool td by subscribing to ChainHeadEvent
- if ahead of best peer, demote it
- addPeer now take own td as current td
- removePeer now take own td as current td
- add relevant tests to peers_test
- eth: backend now calls blockpool with eth.eventMux and chainManager.Td
- 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
