docs/01-usage.markdown @ 5a32a34392a2

Refactor a couple of things

Changes the `:json/class` initarg to just `:json` because it's used so much.
Seems more ergonomic.

Also changes slots without an explicit `:json` to just be standard slots and to
not be serialized.  This seems safer and more reasonable anyway — I'd rather
have to be a little more explict that to accidentally serialize a `password`
slot.

Usage
=====

Jarl is yet another JSON library for Common Lisp.

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