Markdown in comment about scratchaddons

[L8F92587]

I don't think this feature will break project compatibility.
Unlike posting comments for chat, I write comments using markdown syntax even without this feature, and the readability is decent.

なるほど。ただ、この機能がプロジェクト互換性を大きく壊すとは思いません。
コメント欄への投稿と違って、私はこの機能がなくともmarkdown記法でコメントを記述しますし、そのままでも十分読めます。

[BroJac5246]

Similar: #184

This will almost certainly be rejected because unfortunately, people who don't use Scratch Addons won't see the correct formatting and will instead see the mysterious markdown syntax. Scratch Addons features can't break project compatibility with vanilla (non-modified) Scratch, which this would do.