Rakefile in voxpupuli-release-2.0.0 vs Rakefile in voxpupuli-release-3.0.0

@@ -1,22 +1,30 @@
 $LOAD_PATH.unshift File.expand_path('lib', __dir__)
 require 'voxpupuli/release/version'
 
-task :default => :dummy
+task default: :dummy
 
 desc 'Dummy rake task'
 task 'dummy' do
   puts 'this is a dummy rake task that just prints this line.'
 end
 
 begin
   require 'github_changelog_generator/task'
+rescue LoadError
+  # github_changelog_generator is an optional group
+else
   GitHubChangelogGenerator::RakeTask.new :changelog do |config|
     version = Voxpupuli::Release::VERSION
-    config.future_release = "v#{version}" if version =~ /^\d+\.\d+.\d+$/
+    config.future_release = "v#{version}" if /^\d+\.\d+.\d+$/.match?(version)
     config.header = "# Changelog\n\nAll notable changes to this project will be documented in this file."
-    config.exclude_labels = %w{duplicate question invalid wontfix wont-fix skip-changelog}
+    config.exclude_labels = %w[duplicate question invalid wontfix wont-fix skip-changelog]
     config.user = 'voxpupuli'
     config.project = 'voxpupuli-release'
   end
+end
+
+begin
+  require 'voxpupuli/rubocop/rake'
 rescue LoadError
+  # the voxpupuli-rubocop gem is optional
 end