0224: fix 4WD hud hiding
fixes #238
0225: stopping sprayer when in traffic

fixes #234
0226: fixes reversing when turn in traffic

fixes #239
0227: prohibit AutoCombine in mode 7
0228: jump buttons safety measure when there are no vehicles
0229: hud: move symmetrical lane change below lane offset
0230: improved going backwards

#237
0231: decreased trun radius calculation

#213