polish_invoicer.gemspec in polish_invoicer-0.0.26 vs polish_invoicer.gemspec in polish_invoicer-0.0.28

@@ -1,6 +1,9 @@
-lib = File.expand_path('../lib', __FILE__)
+# frozen_string_literal: true
+
+require 'English'
+lib = File.expand_path('lib', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'polish_invoicer/version'
 
 Gem::Specification.new do |spec|
   spec.name          = 'polish_invoicer'
@@ -10,18 +13,20 @@
   spec.description   = 'Creates polish invoices and proforms as HTML or PDF files'
   spec.summary       = 'Creates polish invoices and proforms as HTML or PDF files'
   spec.homepage      = ''
   spec.license       = 'MIT'
 
-  spec.files         = `git ls-files`.split($/)
+  spec.files         = `git ls-files`.split($INPUT_RECORD_SEPARATOR)
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
-  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
+  spec.metadata['rubygems_mfa_required'] = 'true'
 
   spec.add_development_dependency 'bundler'
-  spec.add_development_dependency 'rake'
   spec.add_development_dependency 'minitest'
-  spec.add_development_dependency 'simplecov'
+  spec.add_development_dependency 'rake'
   spec.add_development_dependency 'rubocop'
+  spec.add_development_dependency 'rubocop-minitest'
+  spec.add_development_dependency 'rubocop-rake'
+  spec.add_development_dependency 'simplecov'
 
   spec.add_dependency 'slim2pdf'
 end