Merge pull request #15 from frankvanhest/maintenance

Only PHP 8.0, 8.1 and 8.3 are supported, added GitHub actio

Merge pull request #13

Always output dig result in ASCII for IDN

A couple of changes for phpunit 9

Merge pull request #4 from frankvanhest/php7.1_good_enough

PHP 7.1 is good enough

Merge pull request #2 from frankvanhest/fix_testdata_invalid_check_no…

…thing_found

Fix testdata invalid check nothing found

Typo in composer license