gem 'rake', '< 14'
gem 'rspec', '< 4'
gem 'simplecov', '>= 0', group: %i(development)
gem 'coveralls', '~> 0.8.23', group: %i(development)
gem 'yard', '>= 0', group: %i(development)
gem 'kramdown', '>= 0', group: %i(development)
gem 'ast', '= 2.4.3'
