dbermond [1] filed a deletion request for ruby-thor-0.20 [2]: I'm the maintainer of the package. This was needed for ruby-ceedling 0.31.1, but now ruby-ceedling 1.0.0 does not need it anymore and the package can be deleted.
[1] https://aur.archlinux.org/account/dbermond/ [2] https://aur.archlinux.org/pkgbase/ruby-thor-0.20/
