According to Repology, the current upstream release is 0.17.1.14. Please bump.
I don't think there is anything to do here. We already have it in the tree as app-misc/trash-cli-0.17.1.14_p20170816, and it's in fact stable. Upstream's 0.17.1.14 is dated 2017-01-14, putting it slightly behind the current ebuild which contains the latest commit from upstream. There have been no other releases from upstream and AFAIK trash-cli works as expected (I use it too). Repology does not seem to understand Gentoo's version notation IMHO, I think this bug can be closed as invalid unless there are objections.