Gemfile in nanoc-4.2.0 vs Gemfile in nanoc-4.2.1

@@ -1,11 +1,13 @@
 source 'https://rubygems.org'
 
 gemspec
 
 group :devel do
+  gem 'contracts', '~> 0.14'
   gem 'coveralls', require: false
   gem 'guard-rake'
+  gem 'fuubar'
   gem 'minitest', '~> 5.0'
   gem 'mocha'
   gem 'pry'
   gem 'rake'
   gem 'rdoc'