- Remove the asset_helper file and call the onInitialize and onDeinitialize functions directly
- Small compile fix on Windows
- Removes the need for the registerIdentifierWithMeta function by automatically doing that for all asset.export statements
- Allow the passing of either identifiers (as before) or entire tables to the removeSceneGraphNode, removeScreenSpaceRenderable, deleteLayer, removeAction, and export methods. In that case, the Identifier key from the table is extracted and used instead
* Introduced guiName to PropertyOwner
* Added requirement that PropertyOwner::identifier may not contain whitespaces
* Changed Name to Identifier in asset and scene files
* Added new PropertyOwner to RenderEngine that owns the ScreenSpaceRenderables
* Moved Name and GuiPath into GUI group
* Added user-facing names to layer groups
* Adding ScreenSpaceSpout object to display spout textures in screen space
* Enable the clearing of option properties
* Fix crash in ScreenSpaceImageLocal specification
* Split RenderablePlane into RenderablePlaneImageLocal and RenderablePlaneImageOnline
* Add RenderablePlane Spout
* Rename Texture parameter in ScreenSpaceImageOnline into URL
Closes#518