That's correct. Triple jump hasn't been implemented yet.
Other unsupported actions include:
- Slide kick
- Crawling
- Hanging on celling
As for controller support that'll be difficult to do since I don't have a controller, but I'll see what I can do.
There's a reason why I uploaded the project to GitHub. It'd be nice to have others to help me out with parts of the project I can't do.