v4.2.3- Blender 4.0+

Added missing materials

GateGameplayDesert_Decal,
GateGameplayDesert_Screen
DecoCliffBase
PlatformDirt_DecoCliff, 
PlatformDirt_DecoCliffBase, 
PlatformDirt_DecoGrass, 
PlatformDirt_TrackWall
PlatformGrass_DecoCliff, 
PlatformGrass_TrackWall
PlatformIce_DecoCliffBase, 
PlatformIce_DecoGrass, 
PlatformIce_TrackWall
TechnicsTrimsColorize
WarpScreen155, 
WarpScreen155B, 
WarpScreen155C

Bugfixes

• better warning message for author name missing
• remove default os.login as authorname, prevent export when it is empty
• fix mat creation: use string key instead of index
• Auto-detect TM2020 steam installation