[commit: ghc] master: Add missing @since annotations (57f7a37)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/57f7a37d90d77df1de804cd9ddd3d87da094faf4/ghc

>---------------------------------------------------------------

commit 57f7a37d90d77df1de804cd9ddd3d87da094faf4
Author: Ryan Scott <ryan.gl.scott at gmail.com>
Date:   Wed Oct 12 22:22:43 2016 -0400

    Add missing @since annotations


>---------------------------------------------------------------

57f7a37d90d77df1de804cd9ddd3d87da094faf4
 libraries/base/Data/Semigroup.hs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/base/Data/Semigroup.hs b/libraries/base/Data/Semigroup.hs
index 63d4285..88942ad 100644
--- a/libraries/base/Data/Semigroup.hs
+++ b/libraries/base/Data/Semigroup.hs
@@ -483,9 +483,11 @@ instance Ord a => Ord (Arg a b) where
 instance Bifunctor Arg where
   bimap f g (Arg a b) = Arg (f a) (g b)
 
+-- | @since 4.10.0.0
 instance Bifoldable Arg where
   bifoldMap f g (Arg a b) = f a `mappend` g b
 
+-- | @since 4.10.0.0
 instance Bitraversable Arg where
   bitraverse f g (Arg a b) = Arg <$> f a <*> g b