Hello Steve,
LiteSync is being actively supported, but not necessarily being actively updated.
We are favoring stability over new features, so it is only updated when a customer has a real need to use some feature from a new version of SQLite.
This is to avoid problems, as happened before. LiteSync is used by some big corporations so we are being more conservative now.
It is good to know it worked on your flagship application!
If you have any other question, feel comfortable to ask.