diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,7 @@
+# 0.1.1.0
+
+* Added `ASetter'`, which is useful because we can't provide real `Setter` and `Setter'`.
+
+# 0.1.0.0
+
+First release.
diff --git a/microlens.cabal b/microlens.cabal
--- a/microlens.cabal
+++ b/microlens.cabal
@@ -1,26 +1,29 @@
 name:                microlens
-version:             0.1.0.0
-synopsis:            A tiny part of the ‘lens’ library which you can depend upon.
+version:             0.1.1.0
+synopsis:            A tiny part of the lens library which you can depend upon
 description:
-  This is an extract from the @lens@ library (with only 1 dependency).
-  It's not a toy lenses library, unsuitable for “real world”, but merely
-  a small one. It is compatible with @lens@, and should have same
-  performance.
+  This is an extract from <http://hackage.haskell.org/package/lens lens>
+  (with no dependencies). It's not a toy lenses library, unsuitable for
+  “real world”, but merely a small one. It is compatible with 'lens', and
+  should have same performance.
   .
   Use this library:
   .
     * if you want to define lenses or traversals in your own library, but
-      don't want to depend on @lens@
+      don't want to depend on lens
+  .
     * if you are new to lenses and want a small library to play with,
       but don't want to use something “inferior” or have to relearn things
-      when/if you switch to @lens@
+      when/if you switch to lens
   .
   Don't use this library:
   .
     * if you need @Iso@s, @Prism@s, indexed traversals, @at@, @ix@,
       or actually anything else which isn't defined here
+  .
     * if you think lenses compose “in the wrong order” (in which case
-      you're looking for @fclabels@)
+      you're looking for 
+      <http://hackage.haskell.org/package/fclabels fclabels>)
   .
   Note that microlens has /no/ dependencies starting from GHC 7.10 
   (base-4.8). Prior to that, it has to depend on transformers-0.2 or above.
@@ -33,7 +36,8 @@
 -- copyright:           
 category:            Data, Lenses
 build-type:          Simple
--- extra-source-files:  README.md
+extra-source-files:
+  CHANGELOG.md
 cabal-version:       >=1.10
 
 source-repository head
diff --git a/src/Lens/Micro.hs b/src/Lens/Micro.hs
--- a/src/Lens/Micro.hs
+++ b/src/Lens/Micro.hs
@@ -14,7 +14,7 @@
   (&),
 
   -- * Setting (applying a function to values)
-  ASetter,
+  ASetter, ASetter',
   sets,
   (%~), over,
   (.~), set,
@@ -122,6 +122,14 @@
 however, to export functions which take an 'ASetter' as an argument.
 -}
 type ASetter s t a b = (a -> Identity b) -> s -> Identity t
+
+{- |
+This is a type alias for monomorphic setters which don't change the type of
+the container (or of the value inside). It's useful more often than the same
+type in lens, because we can't provide real setters and so it does the job of
+both @ASetter'@ and @Setter'@.
+-}
+type ASetter' s a = ASetter s s a a
 
 {- |
 'sets' creates an 'ASetter' from an ordinary function. (The only thing it