This code is not being actively developed. It was created to fulfill my pandoc writing needs, and the current feature set is adequate for me.
If you have a bug report, you can create an issue or file a pull request. I'll look into it, time permitting.
If you have a feature request, it is unlikely that I will be able to implement it for you. You can create an issue to generate discussion. If you implement a feature, you can file pull request and I will review it eventually, as time permits. If you're interested in making major additions to the code, I'd be happy to welcome a new maintainer to the project.