Tree Style Tab and Mousewheel

[fenjen]

Is your feature request related to a problem? Please describe.
The Tree Style Tab extension is now integrated in Waterfox, which is great 👍 But unfortunately it doesn't seem to work with add-ons, that are installed on top of TST, like TST Mouse Wheel.

Describe the solution you'd like
Either the mouse wheel features integrated in Waterfox too (Vivaldi comes with all that out of the box), or maybe compatibility with the plugin (if e. g. some css class names have been changed, maybe add the original names).

Thanks!