It does all the 2D face rigging (soon)
Unity 2018.3.0 or later versions.
I think?
I haven't tried on older versions.
Install via git url by adding this in your manifest.json
"com.tanatb.2d.rigr": "https://github.com/ttanatb/2d-rigr.git#upm"
Q: Why is it called 2D Rigr
A: make a pull request with a better name