Fix encoding bug
Fix bug when title is not found but should be transformed
Rearrange options
Use lxml if available (this one can repair broken XMLs)
Fix XML parsing issues by removing control characters
Typo related to lxml
Also extract hidden text from PDFs

Useful for scanned PDFs that are represented as images with hidden text.
Don't print pdftohtml parsing errors
Tweak defaults for better results
Ensure utf-8 is used
Update results
Bump version