Option to store native (non-wasm) in a human-readable format

[badcodecat]

Proposal and Use-Case

I would propose an option to store the keys and values as a file in a human-readable format.
In my use case, I would like to have options for my application be configurable through an end user's text editor as well as in the application itself, this is very useful during development, or for power-users.

Implementation Ideas

As far as how this might be implemented, it looks like this crate already uses serde_json for WASM, so saving a JSON file instead might have less friction to implement. Similar to how other implementations are behind features (rocksdb or sled) a feature could be introduced (maybe json or human_readable?).

Other Considerations

Of course this comes with the downsides of being larger to store, and perhaps more inefficient to read/write (as well as added code complexity), but if it was in a non-default feature I think the benefits outweigh the downsides.

[johanhelsing]

Yes, I think it would make sense to have a json optional feature and use rmp-serde by default, for both native and wasm.