Merge pull request #105 from mark-young-atg/provide_changelog_link_on_rubygems

Provide a 'Changelog' link on rubygems.org/gems/marcel

Author: rafaelfranca

marcel.gemspec

@@ -24,4 +24,6 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rake', '>= 13.0'
   spec.add_development_dependency 'rack', '>= 2'
   spec.add_development_dependency 'nokogiri', '>= 1.9.1'
+
+  spec.metadata["changelog_uri"] = 'https://github.com/rails/marcel/releases'
 end