GitLab

* rebase commit

* minors

* rebase commit & minors after rebase

* pep8 fixes & verbosity_level

* minors

* one more rebase

* remove unused imports

* replace os with pathlib & add log tests & fix other tests

* incapsulate getting class name & fix verbose_level

* a little cleanup

* change default log level

* add prefix & clean up

* change verbosity levels to 'logging'

* clean imports

* minors

* add max depth

* minors after rebase