Rakefile in alba-3.2.0 vs Rakefile in alba-3.3.0

- old
+ new

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 require 'rake/testtask'
 
 if ENV['BUNDLE_GEMFILE'] == File.expand_path('Gemfile') || ENV['BUNDLE_GEMFILE'].empty? || ENV['BUNDLE_GEMFILE'].nil?
   ENV['BUNDLE_GEMFILE'] = File.expand_path('Gemfile')