MultiScatter 1.623

New:
- support for 3Ds Max 2022
- improved support for V-Ray 5.1
- added SDK with examples which is installed into C:\Program Files\R&D Group\MultiScatter

Fixes:
- Removing Scatter objects skips some of the them
- More precise object selection in MultiPainter sub object mode
- V-Ray render time clipping - sensitive to distribution plane height
- Reference object crash