Consider replacing bincode

[MichaReiser]

bincode is now unmaintained (considered feature complete). It still gets security updates, for now. But we should probably consider moving to something else.

https://git.sr.ht/~stygianentity/bincode/tree/trunk/item/README.md

[chirizxc]

https://github.com/djkoloski/rust_serialization_benchmark

From what I know:

borsh-rs | wincode

But according to benchmarks, it seems that bitcode is one of the fastest