Add and refactor events

* Change pixel events to `PixelMouseEvent`
  * because `CustomEvent` is too hard to use a custom event of a custom element.
* Add `onBeforeRendering` and `onAfterRendering`
Add a new event

* Add `PixelColorChangeEvent`
* Remove the `logging` attribute
Bump to 0.0.2
Bump to 0.0.3-dev