This PR contains the work done to update the live tests to the latest data plus lots of QoL improvements to the library, including:
* added test cases to test the ``AmiiboService` locally;
* conformed the models to the `Hashable` protocol;
* documented the use of caching with the `AmiiboService` service;
* updated the reference to the new AmiiboAPI url;
* updated the year on the copyrights and header files;
* updated the overall documentation of the source code and the package.
Reviewed-on: #22
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>
