James Munns: 
Following up on my handrolled Deserialize implementation for adjacently tagged enums in no_std, with the limitation of tag has to go before content, ordering-wise;
I have it working completely with json (serde_json_core), but now i also want the roundtrip serialize/deserialize to work with postcard. Serialize seems to work okay (haven't verified the bytes in my buffer, but it serializes something without errors), but deserialize is not happy, and hits the `WontImplement` error in `deserialize_identifier`, which makes sense given a binary format. 
Are there any ways around that? :)