If you can take a look at it. The package is lintian clean except for an experimental tag:
X: libfko3: shlib-calls-exit usr/lib/x86_64-linux-gnu/libfko.so.3.0.0
I have checked and the exit function is not called without proper exit code.
Note: Right now I do not have access to the git repository but I will investigate if I can do something for that.
Regards,