Rakefile in europe-0.0.13 vs Rakefile in europe-0.0.14

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 require 'rake/testtask'
 require 'europe/rake_task'
 
 Rake::TestTask.new(:test) do |t|