A companion gui for arkenfox user.js

• Q: How do I open the arkenfox gui?
  A: With your web browser at https://arkenfox.github.io/gui (this opens index.html).
• Q: How can I view a previous version of arkenfox user.js (ie I use firefox ESR)?
  A: To specify arkenfox version: https://arkenfox.github.io/gui?v=115.1.
  note: version is arkenfox (not firefox), refer to arkenfox user.js tags