Fix PSR-6 issue

What's Changed

• Avoid not allowed key characters for PSR-6 key by @bullett445 in #20

New Contributors

• @bullett445 made their first contribution in #20

Full Changelog: 2.1.0...2.1.1

Add psr/cache 2.0 and 3.0 support

Adds support for 2.0 and 3.0 psr/cache versions.

Add header according to provider

Fixed major bug, where header were always "Authorization: Bearer ". Now auth headers come from OAuth2 headers will come from the provider.

Allow generic token_options to be passed via $config[]

1.3.0

Allow generic token_options to be passed via $config[] @jonathan-graf

Fix OAuth token cache

1.2.2

Fix OAuth getCacheKey method (#12)

Allow custom HandlerStack

Merge pull request #9 from softonic/feature/allow-other-middlewares

Allow passing custom handlerstack

Handle null response

Bugfix: handle null response

Added ClientBuilder

Added ClientBuilder to encapsulate the logic needed to build a GuzzleHttp\Client with the required middleware.

Handle token negotiation transparently

Adds authorization headers, saves token in cache, and retries once in case of failure