Release v0.2.1

Changed

• by default a licenserequest (voucher) will not include chapter information by default
• moved licenserequest part from models.LibraryItem.get_aaxc_url to its own models.LibraryItem.get_license function
• allow book tiltes with hyphens (#96)
• if there is no title fallback to an empty string (#98)
• reduce response_groups for the download command to speed up fetching the library (#109)

Fixed

• Extreme quality is not supported by the Audible API anymore (#107)
• download command continued execution after error (#104)
• Currently paths with dots will break the decryption (#97)
• models.Library.from_api_full_sync called models.Library.from_api with incorrect keyword arguments

Misc

• reworked cmd_remove-encryption plugin command (e.g. support nested chapters, use chapter file for aaxc files)
• added explanation in README.md for creating a second profile