Revert "Revert "Changed the shutdown logic in finite queue to be better about active Items out, but we still have all of the hanging queues from solve. :-(""
Revert "Revert "Changed the shutdown logic in finite queue to be better about active Items out, but we still have all of the hanging queues from solve. :-(""

This reverts commit 36e4c154a0eef2ad0c57aa567886563a7702d64a.

I was just checking to see if the earlier commits had been important... yup!

jkomoros/sudoku,jkomoros/sudoku,jkomoros/sudoku