Write NEWS for 13.12 release.

NEWS

@@ -6,6 +6,36 @@ This file uses Org mode. Some useful (default) key-bindings:
  - Use "<backtab>" to cycle visibility of all nodes
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+* Changes in 13.12
+
+- Added haskell-bot.el
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+- Added support for cabal repl build targets
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+- Automatically add import lines via Hoogle
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+- Automatically add package to cabal file
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+- Added w3m-haddock.el
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+- Added debugger mode
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+- Added preliminary :present support
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+- Added haskell-sort-imports
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+- Added haskell-complete-module
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+- Support if and multi-way if in indentation
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+- Add support to generate tags on windows
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+- Add haskell-language-extensions variable
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+- Improve haskell-simple-indent mode
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+- Improve test cases
+
 * Changes in 13.10
 
 - Small fix for haskell-simple-indent: Certain indentation situations