Rroonga 15.0.4: 2025-03-29

Improvements

• Dropped support for
  native-package-installer.
  We use only
  rubygems-requirements-system.

Rroonga 14.1.2: 2025-01-09

Improvements

• Suppressed warnings from Ruby 3.4.

• Added support for
  rubygems-requirements-system.