Update 2014-04-22

Update packages:

    connection
    http-client
    pem

Update dependencies from [haskell-core]:

    HTTP
    bifunctors
    comonad
    conduit
    conduit-extra
    contravariant
    crypto-api
    distributive
    free
    haskell-src-exts
    monad-logger
    profunctors
    semigroupoids
    semigroups
    tagged
    void
    xml-conduit

Signed-off-by: Nicola Squartini <tensor5@gmail.com>