diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -2,6 +2,15 @@
 Change Log
 ==========
 
+Version 0.7 (2014-03-17) *St. Patrick's Day*
+--------------------------------------------
+
+#### Package changes
+
+* Add `NFData` instance (and `deepseq` dependency)
+* Add `IsString` instance
+* Remove deprecated entities
+
 Version 0.6.0.1 (2013-12-01) *World AIDS Day*
 ---------------------------------------------
 
diff --git a/Data/DList.hs b/Data/DList.hs
--- a/Data/DList.hs
+++ b/Data/DList.hs
@@ -1,6 +1,7 @@
-{-# OPTIONS_GHC -Wall -O2 #-}
+{-# OPTIONS_GHC -O2 #-}
 {-# OPTIONS_HADDOCK prune #-}
 {-# LANGUAGE CPP #-}
+{-# LANGUAGE FlexibleInstances #-}
 
 -----------------------------------------------------------------------------
 -- |
@@ -18,7 +19,7 @@
 
 module Data.DList (
 
-   DList(..)
+   DList
 
   -- * Construction
   ,fromList      -- :: [a] -> DList a
@@ -40,15 +41,15 @@
   ,foldr         -- :: (a -> b -> b) -> b -> DList a -> b
   ,map           -- :: (a -> b) -> DList a -> DList b
 
-  ,maybeReturn
-
   ) where
 
 import Prelude hiding (concat, foldr, map, head, tail, replicate)
 import qualified Data.List as List
+import Control.DeepSeq (NFData(..))
 import Control.Monad as M
 import Data.Monoid
 import Data.Function (on)
+import Data.String (IsString(..))
 
 import Data.Foldable (Foldable)
 import qualified Data.Foldable as F
@@ -83,8 +84,6 @@
 -- >       flatten (Branch x y) = flatten x >> flatten y
 --
 newtype DList a = DL { unDL :: [a] -> [a] }
-{-# DEPRECATED DL "It will be removed in dlist-v0.7 (see <https://github.com/spl/dlist/issues/4 #4>)." #-}
-{-# DEPRECATED unDL "It will be removed in dlist-v0.7. Use 'apply' instead." #-}
 
 -- | Convert a list to a dlist
 fromList    :: [a] -> DList a
@@ -264,7 +263,11 @@
   {-# INLINE foldr' #-}
 #endif
 
-maybeReturn :: MonadPlus m => Maybe a -> m a
-maybeReturn = maybe mzero return
-{-# DEPRECATED maybeReturn "It will be removed in dlist-v0.7." #-}
+instance NFData a => NFData (DList a) where
+  rnf = rnf . toList
+  {-# INLINE rnf #-}
+
+instance IsString (DList Char) where
+  fromString = fromList
+  {-# INLINE fromString #-}
 
diff --git a/dlist.cabal b/dlist.cabal
--- a/dlist.cabal
+++ b/dlist.cabal
@@ -1,5 +1,5 @@
 name:                   dlist
-version:                0.6.0.1
+version:                0.7
 synopsis:               Difference lists
 description:
   Difference lists are a list-like type supporting O(1) append. This is
@@ -17,14 +17,20 @@
                         ChangeLog.md
 build-type:             Simple
 cabal-version:          >= 1.9.2
-tested-with:            GHC==7.0.4, GHC==7.2.2, GHC==7.4.2, GHC==7.6.3
+tested-with:            GHC==7.0.4,
+                        GHC==7.2.2,
+                        GHC==7.4.2,
+                        GHC==7.6.3,
+                        GHC==7.8.1
 
 source-repository head
   type:                 git
   location:             git://github.com/spl/dlist.git
 
 library
-  build-depends:        base >= 2 && < 5
+  build-depends:
+                        base >= 4 && < 5,
+                        deepseq >= 1.1 && < 2
   ghc-options:          -Wall
   extensions:           CPP
   exposed-modules:      Data.DList