Bring in entries from https://wiki.haskell.org/Xmonad/Notable_changes_since_0.11

CHANGES.md

@@ -2,14 +2,24 @@
 
 ## 0.12 (?)
 
-  * Compiles with GHC 7.10.2
+  * Compiles with GHC 7.10.2, 7.8.4, and 7.6.3
+
+  * Use of [data-default][] allows using `def` where previously you
+    had to write `defaultConfig`, `defaultXPConfig`, etc.
+
+  * The [setlocale][] package is now used instead of a binding shipped
+    with xmonad proper allowing the use of `Main.hs` instead of
+    `Main.hsc`
 
   * No longer encodes paths for `spawnPID`
 
   * The default `manageHook` no longer floats Gimp windows
 
-  * Don't crash when there are fewer workspaces than screens
+  * Doesn't crash when there are fewer workspaces than screens
 
   * `Query` is now an instance of `Applicative`
 
   * Various improvements to the example configuration file
+
+[data-default]: http://hackage.haskell.org/package/data-default
+[setlocale]: https://hackage.haskell.org/package/setlocale