Main library to do time series analysis
7.1. Introduction to Statsmodels Library 7.2. ETS Decomposition 7.3. EWMA Theory 7.4. EWMA Exponential Weighted Moving Average 7.5. Holt-Winters Method Theory 7.6. Holt-Winters Method Code - Part 1 7.7. Holt-Winters Method Code - Part 2