* - handle cursor.Prefix on server
- move state reports to KV interface
* add CmdCursorSeekKey
* tests for abstract_kv
* avoid reading configs of databases
* avoid reading configs of databases
* make linter happy
* make linter happy
* cleanup
* port badger features from original implementation
* try to fix test
* try to fix test
* .Close() don't return error anymore - defer friendly
* try to enable badger now
* try to enable badger now
* badger can't run on CI yet
* badger can't run on CI yet
* re-run ci
* skip ctx cancelation for badger
* use NoValues cursor where possible
* add ctx
* fix broken logs
* rebase master
* rebase master
* simplify generators
* hack to measure space distribution
* naive epoch and chunking implementation
* make stateless loop cancelable
* make stateless loop cancelable
* remove one rlp layer
* eth64 protocol support - add forkId to status message
