Gemfile in roadie-rails-1.3.0 vs Gemfile in roadie-rails-2.0.0

@@ -1,14 +1,9 @@
-source 'https://rubygems.org'
+# frozen_string_literal: true
 
+source "https://rubygems.org"
+
 # Specify your gem's dependencies in roadie-rails.gemspec
 gemspec
 
-# Additional development dependencies I use but don't want to declare in the
-# gemfile since they aren't required to develop this codebase.
-group :development do
-  gem 'guard'
-  gem 'guard-rspec'
-end
-
 # Added here so it does not show up on the Gemspec; I only want it for CI builds
-gem 'codecov', group: :test, require: false
+gem "codecov", group: :test, require: false