Robert Garrett
adaf277cba
The Stop command will be handled specially by the Dispatcher to act as a sort of broadcast into the thread pool. Instead of asking the caller to feed in the appropriate number of stop commands, a single one will queue up a stop for all threads. Important for the ergonomics of having a variable number of threads (instead of the earlier magic constant). Moreover, it's necessary if the dispatcher stops using the round-robin style assignment. The pool size is specifiable as an argument to Dispatcher::new().
