Enables the Collected button to be pressed to add an item to another collection - this additionally fixes the issue that the server does not update immediately once a thing has been removed from a collection, allowing you to immediately add to another one.
< Σχολιασμός για τον κώδικα Thingiverse allow adding things to multiple collections
very nice. works smoothly.
[if it doesn't look like it's working, make sure you haven't disabled TamperMonkey]