First version of yiisoft/auth standalone package was released.

The package provides various authentication methods, a set of abstractions to implement in your application, and a PSR-15 middleware to authenticate an identity. Out of the box it provides HTTP basic authentication, HTTP bearer authentication, custom HTTP header authentication, query parameter authentication, and composite authentication that combines multiple methods. It is possible to add your own authentication methods.

More description and usage examples are available in readme.

The code follows our new standards and has 100% test coverage and high mutation score.