dev-haskell/ekg: bump up to 0.4.0.4

Package-Manager: portage-2.2.14
dev-haskell/fb: bump up to 1.0.7

Package-Manager: portage-2.2.14
dev-haskell/ghc-vis: bump up to 0.7.2.6

Package-Manager: portage-2.2.14
dev-haskell/hans: bump up to 2.4.0.0

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