Hi,

> Bin-prot is settled in its design.  We heavily rely on it here
> at Jane Street and store TBs of data in it so there is no way
> it's going to change.  I would say it is future-proof.

Thanks for the clarification, Markus, and I will take a closer
look at bin-prot.  One question, however: is it possible to use
*both* the sexplib and bin-prot syntax extensions on the same
structure?  That way convenience for the developer is preserved,
and users can choose which side of the performance vs readability
trade-off they prefer.

Cheers,
Dario