Mljar-supervised

Bug fixes
- 292 Remove unused params from CatBoost

Enhancements
- 291 Disable loo encoding
- 290 improve ordering in hill climbing
- 287 replace mix_encoding with integet_encoding

Bug fixes
- 283 Don use Random Feature model

Enhancements
- 284 Check time for features selection
- 286 Add R2 score
- 288 Improve algorithms order in not_so_random step

Enhancements
- 274 limit number of iteration in CatBoost

Enhancements
- 92 add time checks
- 270 disable stacking for validation type split and repeats > 1
- 271 disable ldb model sort

Enhancements
- 223 Support for repeated validation
- 266 Adjust validation for small datasets

Bug fixes
- 265 fix validation warning
- 264 fix EDA tests
- 261 better error message for missing golden features

Dependencies
- 260 update fastparquet to 0.4.1