updated documentation

dist/preview release/what's new.md

@@ -128,7 +128,7 @@
 - Added FXAA and MSAA support to the StandardRenderingPipeline ([julien-moreau](https://github.com/julien-moreau))
 - Make teleportCamera public in VR experience helper ([TrevorDev](https://github.com/TrevorDev))
 - Added optional alphaFilter parameter to ```CreateGroundFromHeightMap``` to allow for heightmaps to be created that ignore any transparent data ([Postman-nz](https://github.com/Postman-nz))
-
+- Added renormalization of mesh weights to babylon.mesh. This is used automatically by GLTFLoader but can be called manually as well.  ([Bolloxim](https://github.com/Bolloxim))
 
 ### glTF Loader
 
@@ -140,6 +140,7 @@
 - Added support for MSFT_audio_emitter ([najadojo](http://www.github.com/najadojo))
 - Added support for custom loader extensions ([bghgary](http://www.github.com/bghgary))
 - Added support for validating assets using [glTF-Validator](https://github.com/KhronosGroup/glTF-Validator) ([bghgary](http://www.github.com/bghgary))
+- Added automatically renormalizes skinweights when loading geometry. Calls core mesh functions to do this ([Bolloxim](https://github.com/Bolloxim))
 
 ### glTF Serializer
 - Added support for exporting the scale, rotation and offset texture properties ([kcoley](http://www.github.com/kcoley))