whats new

dist/preview release/what's new.md

@@ -44,6 +44,8 @@
 - Documented PostProcessRenderEffect, DefaultRenderingPipeline, BlurPostProcess, DepthOfFieldEffect, PostProcess, PostProcessManager classes ([trevordev](https://github.com/trevordev))
 - SPS internal storage of each solid particle rotation matrix ([jbousquie](https://github.com/jbousquie)) 
 - (Viewer) Introducing the viewer labs - testing new features. ([RaananW](https://github.com/RaananW))
+- AssetContainer Class and loading methods. ([trevordev](https://github.com/trevordev))
+- KeepAssets class and AssetContainer.moveAllFromScene ([HoloLite](http://www.html5gamedevs.com/profile/28694-hololite/), [trevordev](https://github.com/trevordev))
 
 ## Bug fixes
 - Texture extension detection in `Engine.CreateTexture` ([sebavan](https://github.com/sebavan))