MCMC and smoothing
MCMC has been upgraded to emcee 3.x and the moves have been changed from stretch to a combination of DE moves from https://emcee.readthedocs.io/en/stable/user/moves/
0.1 DE-snooker 0.81 DE 0.09 DE(gamma=1.0)
The smoothing system has been completely redone. A butter lowpass filter is first applied to remove most noise and a smoothing spline is applied to get a clean derivative.