Use like a regular concurrent.futures.ThreadPoolExecutor except there is now a
bump(fut) method. During execution, the deque gets rotated and put back, so
it is possible that workers will pick up a non-optimal next choice for a small
window of time.
tpe_prio is copyright Tim Hatch, and licensed under
the MIT license. I am providing code in this repository to you under an open
source license. This is my personal repository; the license you receive to
my code is from me and not from my employer. See the LICENSE file for details.