There are people that have looked at the code, and I have also got code improvements sent to me.

But a deeper review of critical parts would be good before 1.0 is released.

I have some ideas of perhaps creating an independent library for the core functionality.
That would make it easier to focus on the important parts and not less important command line parsing etc.
The amount of core code is rather small.

(Tread title now also includes litecoin.)