Set version to 0.8.5.0.

Same as version 0.9.0.0. There were no new breaking changes, so let's
go back to major 0.8.

Author: kolmodin

binary.cabal

@@ -1,5 +1,5 @@
 name:            binary
-version:         0.9.0.0
+version:         0.8.5.0
 license:         BSD3
 license-file:    LICENSE
 author:          Lennart Kolmodin <kolmodin@gmail.com>

changelog.md

@@ -4,6 +4,14 @@ binary
 binary-0.9.0.0
 --------------
 
+- `0.8.5.0` was first released as version `0.9.0.0`. It didn't have any
+  breaking changes though, so it was again released as version `0.8.5.0`
+  according to PVP. Next breaking release of `binary` will be version
+  `0.10.0.0`.
+
+binary-0.8.5.0
+--------------
+
 - Add Binary instances for Typeable TypeReps, #131.
 
 binary-0.8.4.1