Release Notes - v0.2.0

v0.2.0 (July 31, 2026)

Title: Align V4 builtin coverage, replay tooling, and test coverage

Date: July 31, 2026

Version: v0.2.0

This release aligns Plutigo with the current Plutus V4 builtin set, refreshes conformance and CI workflows, improves CEK execution speed, and adds mainnet replay tooling and corpus coverage.

✨ What’s New

This release expands runtime validation and adds replay support for mainnet script traces so Plutigo can replay real-world execution paths with stronger coverage.

• Added mainnet script replay runner: The new plutigo-replay CLI loads replay corpora strictly, runs script replays, and produces execution reports for review.
• Expanded mainnet replay corpus coverage: The checked in replay corpus now adds test coverage, benchmark support, and legacy integer cost model support for Variant D.
• Aligned V4 builtin coverage: Plutus V4 builtin availability and tags now match the upstream specification, and the related conformance fixtures now mirror the current builtin set.
• Improved CEK environment lookups: Indexed ancestor lookup and supporting arena management reduce the work needed during execution.

🔧 Fixes

This update corrects execution and validation behavior so conformance checks reflect current runtime rules.

• Fixed conformance coverage: The updated test suite now reflects PV11 semantics, builtin cost models, parser validation, and crypto behavior more accurately.
• Replaced keccak_256 implementation: Plutigo now uses the legacy Keccak implementation from x/crypto, removes the go-ethereum dependency, and keeps builtin coverage tests aligned with the new path.

📋 What You Need to Know

This release keeps release automation current, reduces unnecessary repository automation, and preserves execution and validation alignment.

• Refreshed Go setup workflow: The Go setup workflow now pins actions/setup-go at v7.0.0, keeping build workflows current.
• Updated checkout workflow: The checkout workflow now pins actions/checkout at v7.0.1, keeping build workflows current.
• Simplified CI maintenance: The issue close date automation no longer runs, reducing unnecessary repository automation.

🙏 Thank You

Thank you for using Plutigo.