Add ebuild for dev-python/pep257
(Portage version: 2.2.10/hg/Linux x86_64, unsigned Manifest commit)
# masters = gentoo Da Risk Personal repos[devel] qt java-overlay
masters = gentoo
use-manifests = true
# manifest file only contains DIST entries
thin-manifests = true
# deprecates and banned old eapis
eapis-banned = 0 1 2 3
# eapis-deprecated = 4