0.2.0

• Added support for additional pdf to text extraction engines:
  • pytesseract
  • textract
• Added the ability to bring your own pdf to text extraction engine.
• Added new spacy extension attributes and methods:
  • doc._.page_range
  • doc._.first_page
  • doc._.last_page
  • doc._.pdf_file_name
  • doc._.page(int)
• Built a new documentation site: https://samedwardes.github.io/spaCyPDFreader/