* Added ability to bake envmap textures
* Added Scene.Editor.GetSceneFolder() - allows saving baked resources for scene
* Envmaps are represented with a shiny sphere now instead of a handle
* Fixed Enum Dropdown being the wrong color
* Added [EnumButtonGroup]
* Added GroupButtonControlWidget
* Added Editor.EditorSystem (accessible via Application.Editor)
* Can place [Menu] attributes in game code (was previously in tools only)
* Added "Scene/Bake Envmaps" option
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