This commit takes care of removing residual metadata
added by mat2 during the cleaning of pdf.

georg authored 5 years ago and jvoisin committed 5 years ago

Closes #131

This should close #28

We're using methods that aren't available in Poppler
below 0.46, so we're checking for this upon import.

This commit is based on ideas from @LogicalDash 

- the `src` folder is now `libmat2`
- the `main.py` script is now `mat2.py`