Provide a 'Changelog' link on rubygems.org/gems/redis-actionpack

[mark-young-atg]

By providing a 'changelog_uri' in the metadata of the gemspec a 'Changelog' link will be shown on https://rubygems.org/gems/redis-actionpack which makes it quick and easy for someone to check on the changes introduced with a new version.

Details of this functionality can be found on https://guides.rubygems.org/specification-reference/#metadata

[tubbo]

The CHANGELOG.md in this repo is outdated because it's not automatically updated upon every new pull request merged. We should have an automated changelog generator that works alongside GitHub Releases, and ideally not maintain the file manually.

[mark-young-atg]

The CHANGELOG.md in this repo is outdated because it's not automatically updated upon every new pull request merged. We should have an automated changelog generator that works alongside GitHub Releases, and ideally not maintain the file manually.

If you are using GitHub Releases you can point the changelog_ui directly to that page

'changelog_uri' => 'https://github.com/redis-store/redis-actionpack/releases',

Whichever approach you adopt I think it adds value to provide a "Change log" link on the rubygems page.