Hello Osamu and Andreas. The upstream package has evolved enough that trying to recycle an old DEP5 copyright from a long time ago happened to be not practical. The amount of mismatched copyright years and no longer existing files was quite high.
I eventually ended up writing a new file from scratch, but still keeping an eye on your work (which of course I still thank you) to be sure that I did not miss anything important. It has been a tedious task. This is why the bug was stuck for so long. I apologize for this. Writing copyright files has a lot of nuances, and it requires concentration to do it right. Thanks.

