I decided to rewrite the script.
What’s new:
only one 5-line function from another script is used, the rest is original code under CC0 / Public Domain
Amazon code is cleaner, should produce less false-positive replacements (in theory 😉 )
Support for Libri.de / Bookzilla.de is added. Any and all links to Libri are replaced with links to Bookzilla. Actions on Libri.de itself are also “transferred”.
