Graphics

* New Screen Space Shadow & Contact Shadow options. These are off by default due to extra rendering cost but will generate more accurate shadow rendering once turned on. 

* New global flat shading switches for actors and ground individually. This differs from the material flat shading slider that this is a pure unlit shader that will also provide performance benefit. e.g. you can improve your fps on Quest with these options.

* New dithering option for hair transparency. This is the new default for hair materials. It renders transparency with dithering (dot patterns) instead of alpha blending. Benefit is sorting defects and performance. You can switch back to the alpha mode in settings. 

Lighting

* New light grid option. Duplicate the selected light into an n x n grid and allow them to move with the stage. Demo:

* New global light and shadow limit. All lights are sorted by their distance to their closest actor, and the furthest will have shadow disabled (when exceed shadow limit) or turned off completely (when exceed light limit). This provides a simple and effective way to improve performance without sacrifising too much lighting effect. 

Setting & presets

* Complete overhaul of the preset system. Presets for a particular type of settings are now shared across the system. You can now use presets that are saved for one model on another. 

* Presets are not stored along side application settings (config.json within the application folder)

* Due to the complexity of this change, the presets saved in previous versions will not be recognised. Sorry for any incovinience. Backup your config files if you have important settings you wish to keep and use with older versions. Settings in your content library are all stored in the "settings" folder. You can make a copy of the entire folder and switch back and forth before you switch versions. 

Other fixes & improvements

* Fixed blink

* Added option to turn dragging visulization and hand model off

* Fixed gloss value for some XPS models

* Motion override now has presets and extra options.   

* Updated skymap shader for performance and faster switching.