Gem staleness indication

Now that MRuby has been around for a number of years it's a bit tricky to sort through gems to know what's possibly up-to-date and what's likely abandoned and no longer compatible. Is there any interest in adding a bit of metadata to mgems.yml to make it easier to highlight what's likely maintained and what's likely not?

https://fundamental-code.com/mruby-timeline/ is something I put together with a bit of git log parsing. There are plenty of short lived gems from 2016 and earlier which I'd wager likely have some compatibility issues with how MRuby has evolved over the years.

既存の mgems.yml メタデータと、git-log の解析を含むリンク先の mruby タイムラインを確認し、利用可能な停滞のシグナルを把握します。メタデータと表示の要件をメンテナーと定義します。提案について、メンテナンスされている可能性が高い gem と放棄された gem を特定して強調表示するためのスコープに合意できれば完了です。