Allow kevinrob/guzzle-cache-middleware 2 (#166)
Allow kevinrob/guzzle-cache-middleware 2 (#166)

There does not seem to be any BC break that affects php-tmdb. The only
documented BC break is here:
https://github.com/Kevinrob/guzzle-cache-middleware/pull/75
sirikkoster/php-tmdb-api,php-tmdb/api