v2.0.0 Modernization

Added

• PSR-4 autoloading with cbschuld namespace
• Return type declarations on key methods (setVersion, checkBrowserEdge, etc.)
• compareVersion() method for PHP 8+ compatible version comparisons
• Enhanced Edge browser detection (supports Edge/, Edg/, EdgA/, EdgiOS/ patterns)
• Root-level Browser.php shim for non-Composer backward compatibility
• GitHub Actions CI pipeline (replaces Travis CI)
• Support metadata in composer.json
• Comprehensive upgrade documentation (UPGRADING.md)

Changed

• BREAKING: Minimum PHP version is now 8.0 (was 7.2)
• BREAKING: Added return type declarations to key methods (may affect extenders)
• BREAKING: Class is now namespaced as cbschuld\Browser
• Updated PHPUnit to 9.6 for broad PHP 8.x compatibility
• Updated phpunit.xml.dist to PHPUnit 9.6 schema
• Fixed fgetcsv escape parameter for PHP 8.1+ compatibility
• Removed composer.lock from repository (library best practice)

Removed

• Support for PHP 7.x
• Travis CI configuration (.travis.yml)
• Composer branch alias

Migration

• See UPGRADING.md for detailed migration instructions
• Backward compatibility maintained via automatic class aliasing
• Non-Composer users can still use direct includes

Breaking Changes

PHP Version Requirement

• Minimum PHP version: 8.0+ (was 7.2+)
• Reason: Enables modern PHP features and improved performance

Namespace Introduction

• New namespace: cbschuld\Browser
• Migration path: See usage examples below

Return Type Declarations

• Added return type hints to protected methods
• Impact: If you extend the Browser class and override protected methods, you'll need to add matching return types
• Example: protected function checkBrowserEdge(): bool (was protected function checkBrowserEdge())