I was able to get it working simply by updating "base" and "factorio_version" in info.json from 2.0 to 2.1. Followed Tertius's instructions here for manually editing the mod files: https://forums.factorio.com/viewtopic.php?t=112850. Tested the mod behavior in-game and it's all good. I'd post a pull request or fork but it's been a while since I did anything with git.
