Basically see my comment at T228049#5333127. It claims to support MW 1.27 (which is now dead), has a security review that's still open and reports several issues (T149869), and contains trivial errors such as undefined variables.
At the very least, it should be updated to support newer MW. However, no compatibility policy is set on mw.org, and thus I'm unsure what version to require. If we want the 'master' policy, I believe we should bump the requirement to the older version currently alive, which is 1.31. Otherwise, just bump it to 1.34. Then we can start with fixing obvious errors etc.
CC @Yaron_Koren as author.