Key changes included in this merge:
full EVM stack migration from the internal evmos-based cosmos/evm v0.2.0 to upstream cosmos/evm v0.6.0
Cosmos SDK upgrade from v0.50.15 to v0.53.6
upgrade handler for mainnet state migration, including EVM KV/state migration and compromised vesting account rescue
support for newer EVM/Geth capabilities, including EIP-7702 and EIP-2935
TacBuild-specific functionality preserved and adapted, including liquidstake, epochs, ed25519 precompile, and gTAC ERC20 mint/burn events
This release also removes deprecated legacy components such as x/params, x/crisis, and the obsolete feeibc store, while keeping backward compatibility where possible for operators and existing chain state.
Changelog: https://github.com/TacBuild/tacchain/blob/main/docs/CHANGELOG-v104-v160.md
Migration guide: https://github.com/TacBuild/tacchain/blob/main/docs/migration-v104-v160.md