September 14, 2014:
I added it to highest a few days ago.  It appears to be working well there, though it's not blazingly fast.

September 6, 2014:
This code is well tested now.  I've not added it to highest yet, but it passes 100% of the unit tests I've
thrown at it.

September 5, 2014:
This code is pretty well tested now.  I still want to embed it in "highest" before calling it ready for real use.

September 5, 2014:
This code is completely untested, and should be considered a mere rough-draft.  Don't use it yet.