- 2.4.0:
  - **Major updates**
    - New refraction channel for Standard material (including fresnel support). [See demo here](http://www.babylonjs.com/Demos/refraction/) ([deltakosh](https://github.com/deltakosh))
  - **Updates**
    - New OnPickTrigger support for spritesManager ([deltakosh](https://github.com/deltakosh))
    - New SPS method `digest()` ([jerome](https://github.com/jbousquie))
  - **Bug fixes**
  - **Breaking changes**