Changes
### Added
- Support the `::class` magic constant: `self::class`, `parent::class`, `static::class` and `ClassName::class` now parse into a `static-constant-access` node whose member value is `class`, which the compiler resolves to the fully-qualified class name ([zephir-lang/zephir#2527](https://github.com/zephir-lang/zephir/issues/2527)).