Error handling

BugFix: Ensure exceptions care caught and forwarded to the handleError method

PHP8.1 Support

v1.2.0

PHP8.1 is supported

PHP8 support

Bump minimum PHP version to 7.4 and above
Response::createFromRequest now allows the response value to be passed in returning a response ready to be sent without an additional call to setResult or setError
RpcMessageInterface type hinting interface added

Initial release of library

1.0.1

Fix composer.json