+ Add infors (CODE_OF_CONDUCT.md, MANIFEST.in, LICENSE, README.md, requirements.txt, CITATION.cff)
+ Add package `ml` (machine learning) and `ts` (time series)
+ `ml` package has:
+ `label` module has:
+ `LabelEncoder` class
+ `scaler` module has:
+ `StandardScaler` class
+ `MinMaxScaler` class
+ `MaxAbsScaler` class
+ `RobustScaler` class
+ `Log1pScaler` class
+ `LogeScaler` class
+ `SqrtScaler` class
+ `BoxCoxScaler` class
+ `YeoJohnsonScaler` class
+ `SinhArcSinhScaler` class
+ `DataTransformer` class that can be used with all of the above scalers
+ `ts` package has:
+ `differencing` module has:
+ `DifferenceScaler` class
+ `window` module has:
+ `SlidingTransformer` class
+ `RollingStatisticTransformer` class
+ `ExpandingStatisticTransformer` class
+ Add examples folders