Added a shutdown method to stop the readers. Renamed the thread_target method to _thread_target, because it shouldn't be called outside of the class.
Made the --port command line argument an optional flag.
Added an https_port parameter to the constructor, and made it add a -ps argument to the list of args passed to valve.
Added an --https-port command line flag.
Added a log entry that lists all of the command line arguments passed to valve.
Merge branch 'https' into develop
Merge branch 'develop' (https)