docs/01-usage.markdown @ 64303dece177

Set :allow-print and :allow-read to t when not explicitly provided

If we don't do this, reevaluating a `defclass` after removing an `(:allow-print
nil)` option won't update the class, and still won't allow printing.  You'd have
to set `(:allow-print t)`, eval, then remove it, which is silly.

Usage
=====

Jarl is yet another JSON library for Common Lisp.

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