cssselect==0.9.2 lxml==3.6.1 Markdown==2.6.6 Pillow==6.2.0 pymongo==3.3.0 PyPDF2==1.26.0 python-frontmatter==0.3.1 PyYAML==5.1 requests==2.20.0 six==1.10.0 smartcrop==0.1 toml==0.9.2 Unidecode==0.4.19