Please add a get_chapter(num) function

[Emasoft]

Great library! But I cannot find a get_chapter(num) function. If I need to get the content of a specific book chapter there is no method to do it.
There is also no method to list the chapters titles in plain text. Can you add those?

[dnkorpushov]

@Emasoft, thanks for your interest.
This library only for ebook metadata mainpulation (title, author, cover image, description etc.), not for content. May be add functions to get ebook content in later releases. Get chapters list (table of content) function is planned.