- Add support for Laravel 13
- Add support for PHP 8.5
- Add Env::renameVariable() to rename a key while preserving its value
- Add EnvRenameCommand (env:rename {key} {new-key})
- Register env:rename in LaravelEnvServiceProvider
- Add tests for rename in EnvClassTest and EnvArtisanTest
- Update README with usage examples and API reference