Implemented simple exponential smoothing also there are some minor changes in model.py. I've tested this model with SimpleExpSmoothing in statsmodels (using same smoothing value and optimized=False) and spotted some differences, but I don't know if my test was wrong or my implementation (implemented this using the link given in the issue).
Implemented simple exponential smoothing also there are some minor changes in model.py. I've tested this model with SimpleExpSmoothing in statsmodels (using same smoothing value and optimized=False) and spotted some differences, but I don't know if my test was wrong or my implementation (implemented this using the link given in the issue).