Annoyed that ^F does not work in long github discussions?
Tired from clicking "Load more" over and over again?
This extension is for you!
NB: I have no idea how to make extensions. You might know better than me.
web-ext is pretty cool for running the extension.
The code as-written is pretty hacky, but it does work.
For testing see this issue ("Load more") or this pull request ("Load diff"). For debugging on android see this page. For instructions on how to publish extensions see this.