Fix code style in Guardfile
Disable EmptyElse cop
Add Project#depend_on_rspec_rails?
Rename Project#require_bundler? to #using_bundler?
Use the same project instance consistently
Inject Project instance into SpecSuite
Inject Project instance into Syntax instance
Refactor syntax classes with the stored project instance
Check if rspec-rails is used with Gemfile when there's no runtime data
Add changelog entry