This is a PHP User authentication class. It doesn't do anything special, and I'm sure there are better ways of doing it, but this does what I need it to do. If you think you can do better you're probably right, so feel free to send pull requests.
The class has annotations for use with Doctrine ORM, but this is not required.
Via Composer
$ composer require sarcoma/usersRequires PHP 5.5.0 or newer.