v1.0.5-beta.1

This release adds support for (PSR-16: Common Interface for Caching Libraries)[https://www.php-fig.org/psr/psr-16/] cache adapters, and includes a new NullGrantType for manually specifying an access token without a method for retrieving a new one (see the README for more details). This is beta because I may be adding one more change to the final release of 1.0.5.

v1.0.4

Improvement: Better handling of corrupted tokens

When restoring an existing token from persistence, the token may be
in an unreadable format, or otherwise corrupt. This update ensures
the corrupt file is discarded and a new access token is obtained.

v1.0.3

Bugfix: Fixed error that prevented Refresh Tokens from being used properly.

v1.0.2

Bugfix: Fixed signing bug for some Guzzle versions in the PasswordCredentials and RefreshToken grant types (thanks @radmar).

v1.0.1

Bugfix: if an access token is granted, then revoked by the OAuth server, this update causes the client to delete the old access token and request a new one without dropping any requests.

v1.0.0

Testing is complete on all Guzzle versions and PHP versions and there are no outstanding issues.

v0.9.2

Fixed bug in the file persistence system

v0.9.1

Added the Guzzle requirement to composer.json and released so packagist/composer can handle dependency management properly.

v0.9.0

Initial commit after splitting back off from the Guzzle project. My aim is to keep this one, single package working for Guzzle 4, 5 and 6+