LiveJimaku (YouTube Live subtitles) per TripingPC

塗田一帆がオリジナルの拡張機能を作成しました。これはあくまでもコピーです。
@nulltypo created the original extension. This is only a copy.

このFirefox版に不具合があったら、私（TripingPC）に連絡してください。
Please contact me (TripingPC) if this version for Firefox breaks.

このアドオンは、選択したユーザーのライブコメントからYouTube放送の字幕を作成します。
This add-on creates subtitles on YouTube broadcasts from a chosen user's live comments.

◆features
You can input the user name from YouTube Live chat and
their comments will be automatically displayed as subtitles.
If you specify the username of a volunteer who translate and comment what the streamer is saying as a real time , you can enjoy the live streams in any language.

◆Usage
(1) Click the icon in the chat field.
(2) Copy and paste the user name you want to specify
(3) Click the icon again to close it.