v1.1.0 - PHP 8.0-8.5 Support

What's Changed

Testing & CI

• ✨ Add PHPUnit support for PHP 8.0-8.5
• ⬆️ Update PHPUnit from ^5.7 to ^9.5 || ^10.0 || ^11.0
• 🔧 Add GitHub Actions CI workflow for PHP 8.0, 8.1, 8.2, 8.3, 8.4, 8.5
• 🗑️ Remove Travis CI (deprecated)
• 🔧 Update Scrutinizer config for PHP 8.4

Documentation

• 📝 Improve README with project overview and features
• 🗑️ Remove outdated CI badges
• 📝 Modernize installation instructions (use composer command)

Maintenance

• 🧹 Remove .DS_Store and add to .gitignore
• 🔧 Remove composer.lock from repository
• 🐛 Fix PHP 8.x compatibility issues in test mocks
• ✅ Update tests to use modern PHPUnit assertions

Note: composer.json still requires PHP >=5.4.0 to preserve historical compatibility, but tests now run on PHP 8.x only.

Full Changelog: 1.0.1...1.1.0