Paraunit 2.4.0: add two new options

This new release comes thanks to a new contributor: thanks @raffaelecarelle!

He contributed the support of two native PHPUnit options with a single pull request: --exclude-testsuite and --test-suffix. Both these options allow the user to filter and exclude tests from the execution.

This is the full changelog

Added

• --exclude-testsuite option #273, thanks @raffaelecarelle
• --test-suffix option #273, thanks @raffaelecarelle