What surprises me about the repo is that there is no commit history before making it public. Did they manually copy the code (why should they?) or not use a VCS at all before (can't imagine this)?
Commits are an essential ingredient in a modern codebase to describe why each line of the code is there.
I don't want to go back to blocks being commented out and code intertwined with comments like /* 6-dec-2016 tomtomtom: moved from other_function() to fix latency */