Paraunit

Paraunit 0.9: PHP 7, PHPUnit 6 and the pipelines

After a long time and a lot of work, Paraunit 0.9 has been released. This release is a big step ahead: now Paraunit runs with PHPUnit 6, and support to older versions is dropped; this also means that the minimum supported PHP version is now 7.0, and the minimum version of the Symfony components is bumped to 2.7, since older versions are out of support since may.