added svg for epub3 support & azw3 mime type
This patch adds epub3/azw3 support, which includes SVG image type and azw3 (mobi) mime type. I tested these types using ebooks from https://standardebooks.org/
Edited by Ed Bruck
This patch adds epub3/azw3 support, which includes SVG image type and azw3 (mobi) mime type. I tested these types using ebooks from https://standardebooks.org/