EPUB Reader: Added EPUB reader
Except Compat: Updated to export more module functions
Options: Added option to turn on epub html extensions
HTML Reader: Extended HTML Reader to recognise EPUB specific elements
HTML Reader: Added support for anchors on links and list items
HTML Reader: Added ability to read MathML formatted <math> blocks
EPUB Reader: Integrated into program
EPUB Reader: Added tests
README: Updated with EPUB information