Kappa v3.0 Preview E8 (Patreon)

Oi folks,
here is the update I was talking about yesterday. Most of the changes are improvements, fixes and adjustments here so I might forgot about some in this changelog:

- improved RSM
- adjusted atmosphere and clouds
- added support for labPBR emission
- improved SSRT filtering and dithering
- adjusted bloom
- added depth of field
- added lens flare