Cloudexport 4.2.1

1. Remove outdated `FileHandler` class

Cloudexport 4.2.0

1. Fix dynamic properties in PHP 8.2
2. Update Chromeheadlessio's php-client library version.

CloudExport 4.1.0

1. Add "serviceHost" argument to chromeheadless($token, $serviceHost), khtml($token, $serviceHost), phantomjs($token, $serviceHost) methods beside settings().

CloudExport 4.0.0

1. Make authentication token optional to work with local export server
2. Add serviceHost and serviceUrl settings for cloud export to work with local export server
3. Update chromeheadlessio/php-client version

CloudExport 3.0.1

1. Update chromeheadlessio/php-client version

CloudExport 3.0.0

1. add phantomjs engine support

CloudExport 2.1.1

1. Update chromeheadlessio/php-client version

CloudExport 2.1.0

1. Update chromeheadlessio/php-client version

CloudExport 2.0.0

1. Add wkhtmltopdf engine support

CloudExport 1.5.1

1. Change chromeheadlessio php-client version