Check all the signalling going on and see whether they still make sense with
what I now know about cond_signal and cond_wait.
Think of other way to do streaming, possibly without having to lock the
result hash, as that seems to hold up stuff severely when there are more
than X threads at the same time trying to give their results.
Investigate whether Data::Dumper could serve as an alternative for Storable.
Add still more examples.
Add support for Thread::Needs?
Find out why Thread::Pool sometimes just dies in long running processes.
Check out whether all checks for $pool->notused are correct.