Gemfile in soaspec-0.2.29 vs Gemfile in soaspec-0.2.30

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 git_source(:gitlab) { |_repo_name| 'https://gitlab.com/samuel-garratt/soaspec' }
 
 # Specify your gem's dependencies in soaspec.gemspec