The page says the latest release was 2017-08, that seems tremendously outdated. Am I missing something? Is it updating in the background?
Since then just the “develop” branch has received new code, but GitHub Insights shows stable activity on the last month.
I’m not involved in the project, they’re probably low on contributors and taking things slow. The documentation does point to compiling from code, so you should be good by using the develop branch and even bumping some dependencies if concerned with security issues and etc