Is this repository completely unmaintained?

[KnightChaser]

I'm currently interested in programmatically controlling VirtualBox for VM operation automation, and I found this package because I wanted to use the Go language for such developments. The code looks generally good, well-organized, and easy-to-use... but it looks like this repository has the most recent commit history about 4 years ago. I wonder if it's still a good option to use this package for my development.