Release v1.1.1

- Add multi-version Ruby & Rails support (Ruby 2.7, 3.0, 3.1 with Rails 6.1, 7.0, 7.1)
- Add comprehensive CI/CD testing with GitHub Actions
- Add bin/test_all for local multi-version testing
- Add bin/check_dependencies for dependency checking
- Fix platform compatibility issues
- Remove hardcoded test paths