Version 4.5.0

What's Changed

Breaking Changes

• Minimum PHP version raised to 8.2 (was 7.4/8.0)
• Minimum PHPUnit version raised to 11.0 (was 9.x/10.x)

Improvements

• Added suggest section to composer.json for PSR-18 client and PSR-17 factory implementations, guiding users toward compatible HTTP dependencies
• Improved discovery test — Now verifies discovery works end-to-end by creating a service via Factory

Infrastructure & Tooling

• Modernized CI pipeline — Replaced Travis CI with GitHub Actions; test matrix covers PHP 8.2, 8.3, 8.4, and 8.5
• Added Psalm static analysis (level 1) with dedicated CI workflow and baseline
• Added backward compatibility check workflow
• Migrated all tests to PHPUnit 11 attributes — Replaced @test and @dataProvider annotations
• Added composer scripts — test, psalm, cs:fix, cs:check
• Removed legacy CI configs — .scrutinizer.yml, .styleci.yml, .travis.yml
• Updated README badges — Travis badge replaced with GitHub Actions Tests and Psalm badges

Full Changelog: 4.4.0...4.5.0

Version 4.4.0

Bug Fixes

• PHP 8.4 compatibility: Use explicit nullable types (?Type) instead of implicit nullable parameters, fixing deprecation notices on PHP 8.4 (Swap.php, Factory.php) #144, #147
• Replace deprecated HttpClientDiscovery: Use Psr18ClientDiscovery instead of the deprecated HttpClientDiscovery in Factory.php #142

Maintenance

• New runtime dependencies: Added symfony/http-client and php-http/message-factory to require
• New suggestion: php-http/discovery added to suggest for auto-discovery of HttpClient
• Documentation: Multiple README and docs updates

Full Changelog: 4.3.0...4.4.0

Version 4.3.0

• PHP 8 and PHPUnit 9 support

Version 4.2.0

xChangeApi.com support

Version 4.1.0

Added way to add services by instance

Version 4.0.1

Making Swap not final to allow mocking

Version 4.0.0

See CHANGELOG to get more informations about the changes in this new version

Version 3.5.0

• Added CurrencyConverterApi service

Fixer now requires an access key

• Fixed Fixer service which now requires an access_key

Stable version of Exchanger

• Added Forge service
• Added CurrencyDataFeed service
• Supported historical rates in National Bank Of Romania