0.0.8: Remove pathlib dependency. (#1)
`pathlib` is not available in python 2.7; `format.py` will crash in that situation. The easiest solution is to just remove the dependency on `pathlib` and use `os.path.splitext` which seems to be supported by both python 2 and python 3 Co-authored-by: Iwan <mvalcke@hubspot.com>