v4.0.2

• Add export-ignore entries for phpunit.xml, phpstan.neon, phpcs.xml, and infection.json.dist.
• Keep dev-only tooling/config files out of Packagist tarballs to reduce install size and noise.

v4.0.1

• Updates .gitignore to ignore common IDE/agent directories and local build/test artifacts.
• Adjusts .gitattributes export-ignore rules to exclude dev-only files from Packagist archives.
• Expands and clarifies naming and exception-guidance in .claude/rules/php-library-modeling.md.

v4.0.0

• Removed the Immutable dependency from the ValueObject contract and dropped the immutability trait usage.
• Updated equals() to enforce same-class checks and strict comparison of object properties.
• Updated project tooling/docs (Infection config, CI actions versions, Makefile targets, README/FAQ, repo config files).

v3.2.0

• Bump PHP requirement to 8.5 in composer.json and Docker image.
• Update dev dependencies and scripts for latest tool versions.
• Enhance Makefile with help, color output, and improved targets.
• Add dependabot and CodeQL configuration for automated security and dependency checks.
• Improve CI workflow, add build job, artifact caching, and optimize steps.
• Remove phpmd from scripts and export-ignore lists.
• Update .gitignore and phpstan config for better coverage.

v3.1.0

• Updates dependencies.

v3.0.0

• Moved immutability logic into a dedicated library for reuse.
• Updated the Value Object (VO) contract to ensure values are compared based on properties.

v2.1.0

• Adds segregation for immutability with an Immutable interface.

v2.0.1

• Fixes README.md and updates dependencies.

2.0.0

• Updates PHP to version 8.2.

v1.0.1

• Change deprecated assertion in tests.