Merge pull request #11 from kbaczkiewicz/stability-fixes

fix stability bugs

Merge pull request #10 from kbaczkiewicz/readme

README.md

Merge pull request #9 from kbaczkiewicz/final-notebook

finish notebook; make analysis

Merge pull request #8 from kbaczkiewicz/utils-refactor

move db loading code to separate file

Merge pull request #7 from kbaczkiewicz/transformer-fix

fix transformer drivers rating model building

Merge pull request #6 from kbaczkiewicz/classifiers

create classifiers

Merge pull request #5 from kbaczkiewicz/predictions

temporarily move score codes to notebook

add predictions classes