Scrolls through the whole book, returns the requests driver made.

Takes the `dict` of pages to download, the cookie to use and the directory to save to, and then does the magic.

Takes driver's requests as an input, returns a `dict` of page image URLs.

Inspects the opened book, returns a `str` with its title and author.

Asks user for the URL, takes it, removes irrelevant suffixes, adds others, returns two URLs to extract data and links.

Driver needs to behave like a real user to GET page images. This function returns a cookie to bribe Google with.

Asks user whether to backup the available image URLs for later use. Does so, if yes.

Takes the range of pages user specified and image URLs of all pages available, returns a `dict` with selected pages only.