Log Message:
Update to 0.48. From the changelog:

- Now without cruft that was lying around in the build dir
- eheulsmann adds extra documentation on extensions
    https://github.com/pjlsergeant/test-bdd-cucumber-perl/pull/82
- eheulsmann fixes which keys we allow in configuration files
    https://github.com/pjlsergeant/test-bdd-cucumber-perl/pull/81
- Spelling mistakes fixed
    https://github.com/pjlsergeant/test-bdd-cucumber-perl/issues/75
- Table quoting fixed
    https://github.com/pjlsergeant/test-bdd-cucumber-perl/issues/50
- Extensions gains setup and teardown methods
    https://github.com/pjlsergeant/test-bdd-cucumber-perl/pull/78
- Works on old Perls again:
    https://github.com/pjlsergeant/test-bdd-cucumber-perl/issues/79