v0.4.0

What's Changed

• Bump AUR to v0.3.0 + document new install methods by @swperb in #60
• Add Windows build (mingw-w64, wine-validated) by @swperb in #61
• Add Scoop + winget manifests (Windows) by @swperb in #62
• ci: add CodeQL + OpenSSF Scorecard and sign releases with provenance by @swperb in #64
• ci(scorecard): add workflow_dispatch for on-demand runs by @swperb in #65
• docs(contributing): require README filter-list entry for new filters by @swperb in #66
• add temperature filter for warm/cool color adjustment by @priyamkarn in #63
• ci(security): add Flawfinder C/C++ weakness scan + badge by @swperb in #67
• Add stdin/stdout pipe support + -f format flag (closes #16) by @swperb in #70
• Add bicubic + lanczos resampling to scale (closes #18) by @swperb in #71
• Add batch processing via --out-dir (closes #15) by @swperb in #72
• chore(security): clear CodeQL alerts (vendored exclusion + 0644 files) by @swperb in #73
• Add integration test suite: make test (closes #33) by @swperb in #74
• Release v0.4.0 by @swperb in #83

New Contributors

• @priyamkarn made their first contribution in #63

Full Changelog: v0.3.0...v0.4.0