.simplecov in xembly-0.4.2 vs .simplecov in xembly-0.4.3

@@ -1,8 +1,9 @@
-# encoding: utf-8
+# frozen_string_literal: true
+
 #
-# Copyright (c) 2016 Yegor Bugayenko
+# Copyright (c) 2016-2021 Yegor Bugayenko
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the 'Software'), to deal
 # in the Software without restriction, including without limitation the rights
 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
@@ -20,24 +21,24 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
 require 'coveralls'
 
-if Gem.win_platform? then
+if Gem.win_platform?
   SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter[
     SimpleCov::Formatter::HTMLFormatter
   ]
   SimpleCov.start do
-    add_filter "/test/"
-    add_filter "/features/"
+    add_filter '/test/'
+    add_filter '/features/'
   end
 else
   SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new [
     SimpleCov::Formatter::HTMLFormatter,
     Coveralls::SimpleCov::Formatter
   ]
   SimpleCov.start do
-    add_filter "/test/"
-    add_filter "/features/"
+    add_filter '/test/'
+    add_filter '/features/'
     minimum_coverage 90
   end
 end