[FEATURE] Catch fatal errors
[FEATURE] Catch fatal errors

If the logger has only one error without a filename,
then it is a fatal error. Skip the usual output then.

In the future this should be replaced with a dedicated
fatal error method.

Refs #32

mstruebing/editorconfig-checker,editorconfig-checker/editorconfig-checker.php,editorconfig-checker/editorconfig-checker.php,mstruebing/editorconfig-checker