- Custom objects like the 3D particle emitter can be used as any other 3D object
- with the same set of actions and conditions thanks to the 3D capability
- in the scene editor, their Z position and 3D rotations can be changed
- Fix child creation in `doStepPostEvent` function
* Actions, conditions and expressions related to opacity, size (width/height), scale, animations and other common features are now visible only once when you search for them in actions/conditions (instead of being shown once for every type of object supporting them). This reduces the risk of confusion for new or existing users, notably when multiple versions of the same action were returned by the search and was making it difficult to choose the proper one.
* Internally, this works thanks to default, built-in behaviors that are supported by the objects.
