Every Plugin has been updated to correctly follow the same flow through the Scene lifecycle. Instead of listening for the Scene 'boot' event, which is only dispatched once (when the Scene is first created), they will now listen for the Scene 'start' event, which occurs every time the Scene is started. All plugins now consistently follow the same Shutdown and Destroy patterns too, meaning they tidy-up after themselves on a shutdown, not just a destroy. Overall, this change means that there should be less issues when returning to previously closed Scenes, as the plugins will restart themselves properly.
A note regarding the feature `startAt` of `TimerEvent `
When an event gets added it should be either scaled by clock `timeScale`
as well or not scaled at all - depending on the feature purpose.
```javascript
// preUpdate loop
event.elapsed = event.startAt * event.timeScale
```
In my understanding it should not be influenced by `timeScale` at all.
As a developer I would use the feature of `startAt` to specify the exact
offset for my event.
In case I have looped `Timer` for one second and want to start the first
loop in the middle, I would set the `startAt` to half a second. And
scaling is applied during the timer run time as a factor of speed it
elapses.
