[mornington]

I've hit the final revision (for me) of the script now. The newly attached version can handle include and exclude lists for authors and series and the clean up code appears to work fine as far as I can tell.

I've also added a substantial notes section to the head of the script file, detailing everything I know about how updating collections on the Kindle works.

The only remaining "bug" that I can see seems to be a bug with the Kindle, as the "Kindle Collection Manager" program I was using suffered from the same problem (i.e. that sometimes a few books are added to collections and show up in the json (and in Calibre for that matter) as having being added to those collections but the Kindle thinks they're collectionless.

If anybody has any ideas on how to solve that one, I'd like to hear them.