Release/v1.12.13

[ziogaschr]

This release merges upstream up to ethereum/go-ethereum@v1.12.0.

What's Changed

• Merge ethereum/go-ethereum release v1.12.0. Merge/foundation release/1.12 #551

• Drops Kotti chain support. Drop Kotti support #552

  for syncing with Kotti, v1.12.12 can be used. In advance, this v1.12.13 can also be used by importing Kotti genesis in advance of syncing.

Highlights

• In this merge we had to revert the changes made upstream with regards proof-of-work removal.
• core-geth defaults to use Pebble as a backend if no existing database is found (cmd/utils, node: switch to Pebble as the default db if none exists ethereum/go-ethereum#27136). If a previous LevelDB database exists core-geth will keep using that, and if you must have LevelDB for some compatibility reasons, you can force it in Geth with the --db.engine=leveldb flag.

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Comparison with last release: v1.12.12..v1.12.13
Docker images published under etclabscore/core-geth.