[Plugin] Update CHANGELOG.md

[plugin] Update CHANGELOG.md

[plugin] Update CHANGELOG.php

Enable PHP 8.0 support (#1102)

* Enable PHP 8.0 support

* Add GitHub Actions

* Upgrade php-http/curl-client + php-http/httplug

* Upgrade PHPUnit

* Drop PHP 7.2 support

* Update GitHub Actions

Remove PHP 7.2

* Update Travis CI

Remove PHP 7.2

* Drop PHP 7.2 support

Update CHANGELOG for new minor releases (#1074)

Prepare for new release of cache plugin (#890)

First version should be 1. (#758)