PHP 8+ support

[mxr576]

The following deprecation notices are generated when I run the latest release on PHP 8.1

php graph-composer-1.1.0.phar export ./
[12-Sep-2022 07:56:11 UTC] PHP Deprecated:  Return type of Symfony\Component\Console\Helper\HelperSet::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/symfony/console/Symfony/Component/Console/Helper/HelperSet.php on line 104

Deprecated: Return type of Symfony\Component\Console\Helper\HelperSet::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/symfony/console/Symfony/Component/Console/Helper/HelperSet.php on line 104
[12-Sep-2022 07:56:11 UTC] PHP Deprecated:  Return type of Fhaculty\Graph\Set\Vertices::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/clue/graph/src/Set/Vertices.php on line 414

Deprecated: Return type of Fhaculty\Graph\Set\Vertices::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/clue/graph/src/Set/Vertices.php on line 414
[12-Sep-2022 07:56:11 UTC] PHP Deprecated:  Return type of Fhaculty\Graph\Set\Vertices::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/clue/graph/src/Set/Vertices.php on line 451

Deprecated: Return type of Fhaculty\Graph\Set\Vertices::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/clue/graph/src/Set/Vertices.php on line 451
[12-Sep-2022 07:56:11 UTC] PHP Deprecated:  Return type of Fhaculty\Graph\Set\Edges::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/clue/graph/src/Set/Edges.php on line 386

Deprecated: Return type of Fhaculty\Graph\Set\Edges::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/clue/graph/src/Set/Edges.php on line 386
[12-Sep-2022 07:56:11 UTC] PHP Deprecated:  Return type of Fhaculty\Graph\Set\Edges::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/clue/graph/src/Set/Edges.php on line 412

Deprecated: Return type of Fhaculty\Graph\Set\Edges::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in phar:///mnt/files/local_mount/build/graph-composer-1.1.0.phar/vendor/clue/graph/src/Set/Edges.php on line 412

[SimonFrings]

Hey @mxr576, thanks for bringing this up 👍

This should already be fixed for the upcoming v1.2.0. I invite you to run this with the current state of the project, there should be no more deprecation notices (#62 and #63).

I don't know when v1.2.0 will go live, we're currently involved in a lot of other tasks that need our attention. If you need things to speed up in here, consider supporting the project and we'll take a look ;)