CHANGELOG.md in avromatic-0.8.0 vs CHANGELOG.md in avromatic-0.9.0.rc0

@@ -1,6 +1,9 @@
 # avromatic changelog
 
+## v0.9.0 (unreleased)
+- Add support for more than one non-null type in a union.
+
 ## v0.8.0
 - Add support for logical types. Currently this requires using the
   `avro-salsify-fork` gem for logical types support with Ruby.
 
 ## v0.7.1