gem 'appraisal', '< 3'
gem 'bundler', '>= 1.17', '< 3', group: %i(development)
gem 'byebug', '~> 11.0', group: %i(development)
gem 'rake', '~> 13.0', group: %i(development)
gem 'rspec', '~> 3.8', group: %i(development)
gem 'rubocop', '< 2'
gem 'rubocop-performance', '~> 1.4', group: %i(development)
gem 'cose', '~> 1.3.0'
