Add: phpunit-clever-and-smart

Re-run tests that failed first, get faster feedback
Merge branch 'feature/php-clever-and-smart' into develop

* feature/php-clever-and-smart:
  Add: phpunit-clever-and-smart
Mod: PSR-4 instead of classmap
Merge branch 'feature/psr4' into develop

* feature/psr4:
  Mod: PSR-4 instead of classmap
Merge branch 'develop'

* develop:
  Mod: PSR-4 instead of classmap
  Add: phpunit-clever-and-smart