Upgrade to php 8.4 (#6)

* Updated dependencies and added test script #KDS-580

* Added PHP 8.4 to CI #KDS-580

Updated to simple-cache 3.0 and adjusted tests (#5)

* Updated to simple-cache 3.0 and adjusted tests

Release/1.0.0 (#2)

* Ported tests from kodus/db-cache + Added PredisSimpleCache and InvalidArgumentException to source

* Small improvements to test structure

* Clean up / refactor of cache class

* Set up Github action for running tests (#1)

* Update test.yml

* Update test.yml with better naming of build

* Added PHP version to composer.json and removed composer.lock from repo

* README.md

* Check for reserved characters in key only for more lenient handling of keys

* Fixed wrong index in test data

* Added developer notes to README.md regarding typehints and documentation for the predis interface