message: add changelog for wasm related changes
diff: * `FluvioCodec` encoder now supports `FluvioEncoder` types. Implementation with bytes::Bytes now is deprecated. ([#1076](https://github.com/infinyon/fluvio/pull/1081))
  * Added implementations of FluvioEncoder for &T: FluvioEncoder. ([#1081](https://github.com/infinyon/fluvio/pull/1081))
  * Updated RecordAPI with RecordKey and RecordData ([#1088](https://github.com/infinyon/fluvio/issues/1088))
  +* Support WASM for client ([#1101](https://github.com/infinyon/fluvio/issues/1101))
  ## Platform Version 0.8.2 - 2020-05-06
  * Fix Replication fail over with duplication ([#1052](https://github.com/infinyon/fluvio/pull/1052))
  