Potential thread-ing issue in src/main/java/JSR353/JSON/YahooFinanceStub.java!

[neomatrix369]

@karianna: Friends don't let friends start threads this way :-). Look to create a Runnable that a ThreadPool can execute on. Appreciate this is a significant change so perhaps backlog an issue for this.

@neomatrix369: Another issue for discussion and resolving!

[neomatrix369]

@karianna: Can we use Timer and TimerTask instead of using Thread.sleep() to pause and repeat task?