v1.13.3 release

CHANGELOG.md

@@ -1,5 +1,8 @@
-# 1.13.3 (Unreleased)
+# 1.13.3 (August 24, 2023)
 
+* `msgpack`: As a compromise to avoid unbounded memory usage for a situation that some callers won't take advantage of anyway, the MessagePack decoder has a maximum length limit on encoded unknown value refinements. For consistency, the encoder will now truncate string prefix refinements if necessary to avoid making the encoded refinements too long. ([#167](https://github.com/zclconf/go-cty/pull/167))
+
+    This is consistent with the documented conventions for serializing refinements -- that we can potentially lose detail through serialization -- but in this case we are still able to preserve shorter string prefixes, whereas other serializations tend to just discard refinement information altogether.
 
 # 1.13.2 (May 22, 2023)