I still maintain the Hue skill. At the moment, setting scenes may not work if you have scenes for different rooms that have the same name (e.g. “relax” defined for both your living room and bedroom). This is due to an API change Phillips made relatively recently. I’ll be updating the skill to handle the change soon (hopefully some time this week - the work is already started).
Other than that, everything (on/off, brightness, color temperature) should work just fine, right now.
If you use it and have problems, feel free to let me know here, or to open issues on the GitHub repo.
In general the git repo doesn’t see a lot of activity because… it works. There are some outstanding features that I intend to implement eventually, but the core functionality works, and unless Phillips (or Mycroft) make API changes, there’s no need to make code changes - the skill will continue to function.
I have never personally used the Home Assistant skill, so I can’t speak to how well it works.