Added support for B407 and B408 ProductFormDetails

Added support for B407 and B408 ProductFormDetails (headband and prin…

…ted end papers)

Fixed issue with sort order

v6.2.6

Fixed issue with sort order

Updated endpoint for getting edition

v6.2.5

Updated endpoint for getting edition

Added method for getting pocket book price group

v6.2.4

Style fixes

Fixed issue with contacts

v6.2.3

Fixed issue with contacts

Fix for changed contact links response

v6.2.2

Fix for changed contact links response

Fixed issue with empty links array

v6.2.1

Fixed issue with empty links array

Added publisher websites

v6.2.0

Added publisher websites

Refactored different keywords to separate methods

v6.1.9

Refactored different keywords to separate methods

Moved marketing keywords to separate method

v6.1.8

Moved marketing keywords to separate method