Merge branch 'release/v0.1'
Refactored FileStorer to use Flysystem

I setup the FileStorer class to replace its calls to native PHP file functions with the Flysystem package using its local storage adapter.
Refactored to move instantiation of default caching up to the client class
Renamed storer classes to be known as cache classes

I renamed the StorerInterface to CacheInterface and renamed one of the methods from hasCachedData to simply hasData. I updated the concrete FileStorer class to reflect these changes and then changed its name to ProfileCache. I also started work on unit tests for the ProfileCache class.
Fixed merge conflict in composer.json
Merge branch 'release/v0.1.2'
Updated version number in composer.json
Merge branch 'hotfix/v0.1.3' into develop