gem 'rake', '~> 13.0', group: %i(development)
gem 'test-unit', '~> 3.0', group: %i(development)
gem 'standard', '~> 1.0', group: %i(development)
gem 'warning', '~> 1.5', group: %i(development)
gem 'xml-simple', '>= 0', group: %i(development)
gem 'rdoc', '>= 0', group: %i(development)
gem 'marc', '= 1.4.0'
