[Soot-list] Breaking change in Heros

[Bodden, Eric]

Hello.

> Sadly, soot-infoflow is broken. In AbstractInfoFlowProblem, we still
> return set.
> 
> I can make a patch, but I don't claim understanding the semantics of the
> change ;)

I trust this should be fixed by now? If not, please let me know.

Cheers,
Eric