v0.7c
+ added archive-verification at start up
+ added experimental trail-mapping (fast system required)
+ added option to disable geometry-upload


v0.7b

+ added a texture to the finish-barrier
+ sled-light emits more light now
+ better physical approximation of the structure
+ some other minor changes


v0.7

+ rockets and explosions emit light now
+ added fireworks-explosion
+ added flare for rocket-trails
+ added fireworks-finish when reaching the finish-barrier with at least 5 rockets left


v0.61

+ added varying fog and snow
+ added day/night-choice
+ snowflakes now stretch if the sled moves very fast
+ changed the time-scoring