Original docs: https://github.com/stffn/declarative_authorization/blob/master/README.rdoc
Extends Declarative Authorization with Rails 5.2 and Ruby 2.5 support, aiming for backwards compatibility as far as Rails 4.2 and Ruby 2.2 on a best-effort basis.
Branch r5:
cp gemfiles/{RAILS_VERSION}.gemfile Gemfile
bundle
bundle exec rake test