Rakefile in itax_code-0.3.0 vs Rakefile in itax_code-0.4.0

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 require "bundler/gem_tasks"
 require "rake/testtask"
 
 Rake::TestTask.new(:test) do |t|
   t.libs << "test"