Looks abandoned - last issues are from 2017 and the build system fails when you run it, it points to resources online that no longer exist. Why did this get posted?
Is there an example of a "popular bitcoin service" where you can have an account, deposit and withdraw coins and not have any record kept of the relationship between those deposits and withdrawals? If the point of a mixer is to obscure the connection between two bitcoin addresses, using a service that records that connection seems like a poor plan.