dbrgn [1] filed a deletion request for polyclipping-cpp [2]: I didn't realize that this package already exists in community. But it does (https://www.archlinux.org/packages/community/x86_64/polyclipping/), so this AUR package can be removed.
[1] https://aur.archlinux.org/account/dbrgn/ [2] https://aur.archlinux.org/pkgbase/polyclipping-cpp/
