Gemfile in rrule-0.4.1 vs Gemfile in rrule-0.4.2

@@ -1,5 +1,14 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
+gem 'pry'
 gem 'rake'
+gem 'rspec', '~> 3.8'
+gem 'rubocop', '0.63.1'
+
+platform :mri do
+  gem 'pry-byebug'
+end
 
 gemspec