Is your feature request motivated by a concrete problem? Please describe.
Currently the serde::msgpack::MsgPack included with rocket only does "compact serialization", meaning it doesn't serialize key names, only values in arrays. To be JSON compatible, and to avoid bugs it would be nice to have "named serialization".
Why this feature can't or shouldn't live outside of Rocket
Since @SergioBenitez is returning, imma pin that one here https://github.com/rocket-org/Rocket/issues/18 @Cloudef