get rid of the draw_funcs stuff.
Threading issues worked out better... Ready to add motion.
Rangefinder now have normalized random noise!
gaussian noise now has a gauss_init to initialize with a seed and chaos scalar
the function move will now update the position of the robot and its theta. This can be merged into libsim once tested
working gaussian nosie function: gauss_noise()
Started on drawing robots in the right place.
fixed the environment variable stuff
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