Untabify changelog and bump release date for 0.5.0.0

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

changelog

 -*-change-log-*-
 
-0.5.0.0  Oct 2013
-	* Update to Cabal 1.10 format
-	* Remove NHC and Hugs specific code
-	* Remove deprecated function exports `Data.Array.IO.castIOUArray`,
-	`Data.Array.MArray.unsafeFreeze`, `Data.Array.MArray.unsafeThaw`,
-	and `Data.Array.ST.castSTUArray`; These functions are still
-	available from the "Data.Array.Unsafe" module.
+0.5.0.0  Nov 2013
+        * Update to Cabal 1.10 format
+        * Remove NHC and Hugs specific code
+        * Remove deprecated function exports `Data.Array.IO.castIOUArray`,
+        `Data.Array.MArray.unsafeFreeze`, `Data.Array.MArray.unsafeThaw`,
+        and `Data.Array.ST.castSTUArray`; These functions are still
+        available from the "Data.Array.Unsafe" module.
 
 0.4.0.1  Sep 2012
-	* Bundled with GHC 7.6.1
-	* Fix inline rule shadowing warnings
+        * Bundled with GHC 7.6.1
+        * Fix inline rule shadowing warnings
 
 0.4.0.0  Feb 2012
-	* Bundled with GHC 7.4.1
-	* Add support for SafeHaskell
-	* New "Data.Array.IO.Safe" module
-	* New "Data.Array.MArray.safe" module
-	* New "Data.Array.ST.safe" module
-	* New "Data.Array.Storable.Internals" module
-	* New "Data.Array.Storable.Safe" module
-	* New "Data.Array.Unsafe" module
+        * Bundled with GHC 7.4.1
+        * Add support for SafeHaskell
+        * New "Data.Array.IO.Safe" module
+        * New "Data.Array.MArray.safe" module
+        * New "Data.Array.ST.safe" module
+        * New "Data.Array.Storable.Internals" module
+        * New "Data.Array.Storable.Safe" module
+        * New "Data.Array.Unsafe" module