This patch release includes two improvements: 1) CI is handled by Github Actions now - you can check out the build history at https://github.com/PhpGt/Csrc/actions 2) PHPStan level 6 has been applied to the code, meaning certain type hints have been improved for greater readability and future maintainability.
Amongst these improvements is the introduction of the TypeSafeGetter interface which makes nullable type safe getters more consistent across PHP.Gt repositories.