Version 0.9.0

• Fixes issue in XLS to XLSX converter
• Added support for width and height generic attributes in Markdown renderer
• Features and improvements for the DOCX converters from the dev branch have been merged, including:
  • New DOCX to HTML converter
  • Support for nested tables and conditional formatting in DOCX to RTF converter
  • Support for wrap layouts and floating images in DOCX to RTF converter
  • Support for comments in DOCX to RTF converter
  • Support for DOCX sub-documents
  • Preserve ink, signature lines, media elements and 3D objects as images
  • Other improvements