* Process BlockHeadersMsg
* Print invalidations
* Print reason for parent-child mismatch
* Fix off by one error
* Fix ExtendDown
* Replace tipLimiter with an LRU cache
* Retrieve 256 headers at a time
* Hard coding of tips, process new block hashes
* extract headers
* Write hard-coded headers into a file
* Add total difficulty
* Insert hard coded headers
* Log i
* Initiate download from hard-coded anchors
* Print the state of anchors
* Add hard-coded headers as tips
* Spare the peers
* Refine LRU caching of tips
* Print length of anchor trees
* Limit requests to 192 headers
* range error fix
* Print better, retain at least one tip in the LRU cache
* Skip duplicate line ends
* Throttle requests, display peer name
* Back off, intermediate tip queue
* Print block header timestamp
* Better logging
* Log less
* More logging of evictions
* Fix queue push
* Fix queue pop
* Exclude duplicate tips
* Fix tips logging
* Fix moving
* Add port flag
* Check headers
* Print extra
* Add mixDigest to serialisation
* Fix difficulty in hard-coded headers
* Avoid duplicate header requests
* Update peer characteristics on NewBlockMsg
* Remove backoff when peer responds
* Fix tests
* Fix lint
* Fix lint
* First algorithm
* Update doc
* Second algorithm implemented
* Prepend (unfinished)
* More on prepend
* More fixes
* Change CalcDifficulty interface
* fix make test
* Fix formatting
* Another test
* More on Preprend
* Another test for Prepend
* More tests for Prepend
* More tests for Prepend
* Move files to turbo
* Add another test for Prepend
* Started adding Append algorithm
* More work on Append
* Start changing the terminology
* Split trees into segments
* More fixes
* Fix compilation
* Connect
* FindAnchors, FindTip
* Tip has anchor and not anchorParent field
* Remove Prepend and Append
* Add Connect
* NewAnchor algorithm
* More to recovery from files
* Add more to AddAnchor
* Request more headers
* Header fix-sizes serialisation
* Upgrade CI to 1.15
* Fix lint
* Fix lint
* replace RLP with fixed-sized serialisation
* Fix lint
* More algos
* Fix lint
* v0
* more docs, less customization
* more docs, less customization
* more docs, less customization
* don't store db reference
* rely on fact that lmdb key/value valid until end of transaction
* clean
* clean
