Is your feature request related to a problem? Please describe.
Currently the base package only implements regular FIFO; priority queues are a natural extension.
Describe the solution you'd like
Implementation of a ParallelQueueSystem which utilizes priority queueing.
Describe alternatives you've considered
This should be relatively easy given that SimPy already has a priority queue model for resources. One could theoretically register each resource (queue) as one wherein the put queue is a priority queue.