Do not fail silently

[emri99]

Hello

Thanks for this great tool ;)

Is there a reason not to return exit code ?

I'm currently using as standalone script in CI runner, and I cannot get information whether subsplit stage is successful or not.
Would you consider adding an exit code or at least don't redirect stderr so subsplit error can be detected programmaticaly ? Or maybe, there's another way I'm not aware of yet ?

Thanks