Version 1: run_keras_simple.py - simple solution using Keras
Version 2: run_keras_cv.py - Added cross-validation (LB ~1.4)
Version 3: run_keras_cv_drivers.py - Added cross-validation based on driver ID
Version 4: run_keras_cv_drivers_v2.py - Added random rotation of images, new CNN structure and some useful callbacks like "EarlyStopping" and "ModelCheckpoint". (LB: ~1.0 and lower)