Merge pull request php-opencloud#331 from alcalyn/patch-1

Fix Call to undefined function GuzzleHttp\Psr7\modify_request()

Added support for PHP 8.0

Guzzle 7 and minor improvements

add read variable to the container

Merge pull request php-opencloud#255 from biigle/fix-large-object-seg…

…ments

Fix number of segments of a large object

Merge pull request php-opencloud#228 from php-opencloud/backport

Bumped dependencies to remove guzzle/guzzle

Readme (php-opencloud#227)

* Use coveralls badge. Fixed typo.

* Clarify roadmap and support

Backport: Serialize \ DateTimeImmutable (php-opencloud#220)

Handle Datetime serialization (php-opencloud#148)

Object Storage retrieval: containerName and name missing (php-openclo…

…ud#210)

* Repopulate instance from input array

* Added unit tests

* Fixed authentication v2 bug

* Updated unit tests