Bump to 0.4.8 and changelog entry

STMonadTrans.cabal

@@ -1,16 +1,15 @@
 cabal-version:  1.18
-name:		STMonadTrans
-version:	0.4.7
-x-revision:     1
-license:	BSD3
-license-file:	LICENSE
-author:		Josef Svenningsson
-maintainer:	[email protected], Andreas Abel
+name:           STMonadTrans
+version:        0.4.8
+license:        BSD3
+license-file:   LICENSE
+author:         Josef Svenningsson
+maintainer:     Andreas Abel, [email protected]
 homepage:       https://github.com/josefs/STMonadTrans
 bug-reports:    https://github.com/josefs/STMonadTrans/issues
-category:	Monads
-build-type:	Simple
-synopsis:	A monad transformer version of the ST monad
+category:       Monads
+build-type:     Simple
+synopsis:       A monad transformer version of the ST monad
 description:
    A monad transformer version of the ST monad.
    .

changelog.md

@@ -1,11 +1,18 @@
-0.4.7
+0.4.8 -- 2023-01-04
+
+  * Added `Alternative` instance for `STT`, by William Rusnack
+    (PR [#33](https://github.com/josefs/STMonadTrans/pull/33)).
+  * Drop support for GHC 7.
+  * Tested with GHC 8.0.2 - 9.8.1.
+
+0.4.7 -- 2023-05-18
 
   * Added `MonadIO` for `SST` (issue [#29](https://github.com/josefs/STMonadTrans/issues/29)).
   * Make `transformers` dependency explicit.
   * Bump `cabal-version` of `STMonadTrans.cabal` to 1.18.
   * Tested with GHC 7.6.3 - 9.6.1.
 
-0.4.6
+0.4.6 -- 2021-08-21
 
   * Warning-free for all supported GHC versions (7.6 -- 9.2).
   * Drop `splitBase` cabal flag (`base >= 4` is already assumed).