Code refactoring, performance optimizations

Code refactoring, performance optimizations

Code refactoring, performance optimizations

Code refactoring, performance optimizations

Code refactoring, performance optimizations
Optimized access token code

Removed dependecy - fork RandomUnderSampler

Full support for the datetime as a search key
Rename ISO to COUNTRY

Support timeseries CV

Override default RMSLE metric calculation
Correct geo search keys normalization

Geo search keys code refactoring