message: Update changelog with Record API
  Follow-on to
diff: * Now ResponseApi and RequestApi encoder-decoders are symmetric ([#1075](https://github.com/infinyon/fluvio/issues/1075))
  * `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))
  ## Platform Version 0.8.2 - 2020-05-06
  * Fix Replication fail over with duplication ([#1052](https://github.com/infinyon/fluvio/pull/1052))
  