dev-haskell/markdown: bump up to 0.1.11

Package-Manager: portage-2.2.12
dev-haskell/monadprompt: bump up to 1.0.0.5

Package-Manager: portage-2.2.12
dev-haskell/oeis: bump up to 0.3.6

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>