AbstractTickSpotifyAPI thread leak #15
Description
AbstractTickSpotifyAPI#initialize creates a ScheduledExecutorService with one thread to handle ticking. AbstractTickSpotifyAPI#stop does stop execution of the tick task but does NOT shutdown the executor. By default, fixed thread size executors will retain their threads indefinitely regardless of work until they are shutdown. This results in the thread used by the executor never being released, with a new executor being created each time AbstractTickSpotifyAPI#initialize is invoked.
This mainly becomes problematic in long running scenarios where the API is attempting to automatically reconnect but there is no Spotify app (either closed or not installed) and will eventually result in the process running out of resources.