Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* Extract pruneLinkQueue() out of ProcessSegment()

* Use sub-slices for segment actions

* De-dup blockHeaders66() and blockHeaders65()

* Simplify loops and EOL detection

* Add ChainSegmentHeader struct and refactor

* Add RawRlpHash() to avoid re-encode for header hash

* Avoid multiple redundant rlpHash()

* Sort headers by height,hash to make dups consecutive

* Flip condition to reduce map lookups

* Remove redundant check

* Use rlp.RawValue rather than []byte to help self-document

* erigon 2 state experiment

* Some boilerplate

* More boilerplate

* More boilerplate

* Introduce comparison

* trace merges

* Fix

* Update erigon-lib dependency

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>
Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* completed and cleaned up dev chain build

* Last minute syntax changes

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* Update server.go

* Update server.go

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* drop_txpool_v1

* drop_txpool_v1

Co-authored-by: Alex Sharp <alexsharp@alexs-macbook-pro.home>

* Revert "Making corrections to code formatting"

This reverts commit c154d65c.

* Revert "Implemented devnet test for eth_getBalance"

This reverts commit dc4c001f.

Co-authored-by: Alex Sharp <alexsharp@alexs-macbook-pro.home>

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* drop_txpool_v1

* fix

Co-authored-by: Alex Sharp <alexsharp@alexs-mbp.home>

* Rename protoHandshake.ID to protoHandshake.Pubkey

* Fix enode.ID comment descriptions

* Change sentry peer_id from H512 pubkey to H256 keccak256(pubkey)

* Simplify PeerInfo helpers

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* save

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Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* Cleanup

* Restore

* Fix for existing tx

* Cleanup

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>

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[Eip4399 part 3/3] Supplant DIFFICULTY opcode with RANDOM

* added diff stage

* added td stage

* improvements + more tests

* added err check

* added err check

* transition raw interfaces

* interface for transition

* unwind updates

* maybe this fix

* now fixed?

* fixes

* better db-format

* better db-format

* sum and mod

* sum and mod

* fixed headers unwind

* Ropsten preverified hashes

* Pre-verified hashes for mainnet, skip analysis

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>