bin/console in d_heap-0.2.1 vs bin/console in d_heap-0.2.2

@@ -1,5 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 require "bundler/setup"
 require "d_heap"
 
 # You can add fixtures and/or initialization code here to make experimenting