Two of the changes you list in remaining changes are already included in the Debian package and therefore don't appear in your debdiff: debian/gnupg.udev and the addition of libcurl4-gnutls-dev to Build-Depends.
Two of the changes you list in remaining changes are already included in the Debian package and therefore don't appear in your debdiff: debian/gnupg.udev and the addition of libcurl4-gnutls-dev to Build-Depends.