3.0.1: minor dependency bump (Vonage#309)

This release bumps 3.0.1 in order to resolve dependency chain problems with nexmo-laravel specifically with psr/container

Removal of major deprecations (Vonage#301) (Vonage#304)

* Removal of major deprecations (Vonage#301)

* Removed call module, depreciated in favour of Voice module

* Remove user module.

* Modify Keypair to allow tests to fetch the input key, test basic creation of JWT

* Drop support for 7.2 and 7.3

* Add php core return type will change annotations for PHP8.1 compatibility. These will be removed anyway later due to deprecations.

* Depreciated methods removal for talk

* Marked Application and talk deprecations

* Removed callback and message objects marked for deletion

* Removed Filter and finally the IterableServiceShimTrait.php to let Iterable API collections handle that rather than service layer

* Feature/further removals (Vonage#305)

* Depreciated methods removal for talk

* Marked Application and talk deprecations

* Removed callback and message objects marked for deletion

* bump container, min required PHP74 which is the same for library anyway

* migrate phpunit schema

* Feature/array access deprecations (Vonage#307)

* Array access removals

* Almost all array access removed

* Remove array access tests

* Final test cleanup

* Minor readme tweaks

Fix prophecy to use trait, update maintainer details (Vonage#300)

* Big rewrite to extend off a new base class so the prophecy trait can be used across the suite

* Update change of ownership within Vonage

* remove support for PHP7.2 + PHP7.3

* remove support for PHP7.2 + PHP7.3. Build support for 8.1

* split support for older php versions as a temporary measure until we make production catch up

* Update changelog

Updated the changelog to include unicode fix (Vonage#297)

* Updated the changelog to include unicode fix

* Tweaks to wording on changelog

Bumped to 2.9.2 with changelog

Version bump to 2.9.1

Allow toll-free numbers to be searched for

Updated changelog for 2.8.1 release

Added support for PSR-3 (Vonage#272)

* Added support for PSR-3

Co-authored-by: Greg Holmes <greg.holmes2@vonage.com>

Added 2.7.1 changelog