Implemented a cache system on load of the Authorize service
Refactored Cache system. Provide cache storage options in module.config.php. Added Unit Tests
Minor CS fixes in test suite, proper mocking of the service locator
Further CS fixes, removing unused imports
Removing 5.5 from allowed failures, using pre-installed composer
CS fixes and usage of phpcs to ensure PSR2 compatibility
Merge branch 'feature/caching' - fixes #145 - fixes #152