Gemfile in citeproc-ruby-1.1.8 vs Gemfile in citeproc-ruby-1.1.10

@@ -3,53 +3,31 @@
 
 #gem 'citeproc', :github => 'inukshuk/citeproc'
 #gem 'csl', :github => 'inukshuk/csl-ruby'
 
 group :development, :test do
-  gem 'rake', '~>10.0'
-  gem 'rspec', '~>3.0', '<3.2.0'
-  gem 'cucumber', '~>2.3'
+  gem 'rake'
+  gem 'rspec'
+  gem 'cucumber'
+  gem 'unicode_utils', require: false unless RUBY_VERSION >= '2.4'
 end
 
 group :debug do
-  if RUBY_VERSION >= '2.0'
-    gem 'byebug', :require => false, :platforms => :mri
-  else
-    gem 'debugger', :require => false, :platforms => :mri
-  end
-
+  gem 'byebug', :require => false, :platforms => :mri
   gem 'ruby-debug', :require => false, :platforms => :jruby
-
-  gem 'rubinius-debugger', :require => false, :platforms => :rbx
-  gem 'rubinius-compiler', :require => false, :platforms => :rbx
 end
 
 group :optional do
-  if RUBY_VERSION >= '2.2.2'
-    gem 'edtf', '~>3.0'
-  else
-    gem 'edtf', '~>2.0'
-  end
+  gem 'edtf'
 	gem 'chronic'
 end
 
 group :extra do
-  gem 'guard', '~>2.2'
-  gem 'guard-rspec'
-  gem 'guard-cucumber'
-  gem 'rb-fsevent'
   gem 'pry'
-	gem 'yard', '~>0.8', :platforms => :mri
-	gem 'redcarpet', '~>3.0', :platforms => :mri
+	gem 'yard', platforms: :mri
+	gem 'redcarpet', platforms: :mri
 end
 
 group :coverage do
-  gem 'simplecov', '~>0.8'
-  gem 'rubinius-coverage', :platforms => :rbx
-  gem 'coveralls', :require => false
-end
-
-group :rbx do
-  gem 'rubysl', :platforms => :rbx
-  gem 'racc', :platforms => :rbx
-  gem 'json', '~>1.8', :platforms => :rbx
+  gem 'simplecov', require: false
+  gem 'coveralls', require: false if ENV['CI']
 end