Bugfix/every

There's not a need to create an elm.setInterval. While paused, we can simply ignore these events. We don't need to stop them and start them again.

If there is ever a stateful function in setInterval, then we will need to pause and unpause the function's firing ticker.
It is for the clocks example (setContinue calls executeCallbacks). But on second thought, it's best to reset to the initial callbacks. Thanks for making me stop and think about it more.