Update 2014-01-20

Update packages:

    pipes-bytestring
    skein
    xss-sanitize

Move to [haskell-core]:

    exceptions

Remove packages (temporarily):

    fb
    happstack-authenticate
    clckwrks
    clckwrks-cli
    clckwrks-plugin-bugs
    clckwrks-plugin-ircbot
    clckwrks-plugin-media
    clckwrks-plugin-page
    clckwrks-theme-bootstrap

Update packages from [haskell-core]:

    SHA
    aeson
    base16-bytestring
    blaze-builder-conduit
    conduit
    cryptohash
    monad-logger
    pandoc
    pandoc-types
    uuid
    wl-pprint-text
    yaml