Remove logging stuff everywhere, it clutters the code and doesn't add a
ton of value. I might add a more general logging facility later.
Move route from stop into stop-direction, now renamed
stop-route-direction, since a stop may serve multiple routes, with
different directions for each.
Rename stop-direction to stop-route-direction
First stab at bus-controller. Provide methods to load or reload the
"static" data (routes and stops) into the database, and to derive
stop-events from the delta between two sets of predictions."
Correct doc string for %get-predictions-fast.
Make api:bus and api:prediction structs instead of standard-classes.
Create and bind an lparallel kernel at load time.