Bounced light in LightUp v5

LightUp v2.3b FIXES

- Fix for crash bug when starting Tourtool
- Fix for disappearing geometry
- Fix for Lux contours skipping area emitters
- DOF Locking works for all Schemes
- Better mousewheel sensitivity on Mac
- Handling malformed IES files improved
- Fixed capitalization of kWh
Lighting Sketchup Plugin